SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 63)*

                                   VALHI, INC.
                                (Name of Issuer)

                          Common Stock, $0.01 par value
                         (Title of Class of Securities)

                                   918905 10 0
                                 (CUSIP Number)

                                STEVEN L. WATSON
                              THREE LINCOLN CENTRE
                                   SUITE 1700
                                5430 LBJ FREEWAY
                            DALLAS, TEXAS 75240-2694
                                 (972) 233-1700
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  July 7, 2000
                      (Date of Event which requires Filing
                               of this Statement)

         If the filing person has  previously  filed a statement on Schedule 13G
to report the  acquisition  that is the  subject of this  Schedule  13D,  and is
filing  this  schedule  because  of  sections   240.13d-1(e),   240.13d-1(f)  or
240.13d-1(g), check the following box. [ ]

         *The  remainder  of this cover page shall be filled out for a reporting
person's  initial  filing on this  form with  respect  to the  subject  class of
securities,  and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

         The information  required on the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).

                         (Continued on following pages)




CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Valhi Group, Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) WC 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Nevada 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 93,739,554 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 93,739,554 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 93,739,554 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 81.7% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON National City Lines, Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) WC 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 104,630,563 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 104,630,563 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 104,630,563 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 91.2% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON NOA, Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Texas 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 104,630,563 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 104,630,563 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 104,630,563 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 91.2% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Dixie Holding Company 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 93,739,554 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 93,739,554 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 93,739,554 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 81.7% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Dixie Rice Agricultural Corporation, Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Louisiana 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 93,739,554 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 93,739,554 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 93,739,554 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 81.7% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Southwest Louisiana Land Company, Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Louisiana 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 104,630,563 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 104,630,563 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 104,630,563 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 91.2% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Contran Corporation 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) WC 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware 7 SOLE VOTING POWER -0- NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 106,874,263 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH -0- 10 SHARED DISPOSITIVE POWER 106,874,263 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 106,874,263 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 93.2% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) CO

CUSIP No. 918905 10 0 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Harold C. Simmons 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP(SEE INSTRUCTIONS) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS(SEE INSTRUCTIONS) Not applicable 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION USA 7 SOLE VOTING POWER 653,383 NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 107,666,263 EACH REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 653,383 10 SHARED DISPOSITIVE POWER 107,666,263 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 653,383 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ X ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.6% 14 TYPE OF REPORTING PERSON(SEE INSTRUCTIONS) IN

AMENDMENT NO. 63 TO SCHEDULE 13D This statement on Schedule 13D is hereby amended and restated in its entirety as set forth below, except for Item 3, which is amended but not restated in its entirety (collectively, this "Statement"). Item 1. Security and Issuer This Statement relates to the common stock, $0.01 par value per share (the "Shares"), of Valhi, Inc., a Delaware corporation (the "Company"). The principal executive offices of the Company are located at Three Lincoln Centre, 5430 LBJ Freeway, Suite 1740, Dallas, Texas 75240. Item 2. Identity and Background (a) This Statement is filed by (i) Valhi Group, Inc. ("VGI"), National City Lines, Inc. ("National") and Contran Corporation ("Contran") as the direct holders of Shares, (ii) by virtue of the direct and indirect ownership of securities of VGI and National (as described below in this Statement), NOA, Inc. ("NOA"), Dixie Holding Company ("Dixie Holding"), Dixie Rice Agricultural Corporation, Inc. ("Dixie Rice") and Southwest Louisiana Land Company, Inc. ("Southwest") and (iii) by virtue of his positions with Contran and certain of the other entities (as reported on this Statement), Harold C. Simmons (collectively, the "Reporting Persons"). By signing this Statement, each Reporting Person agrees that this Statement is filed on its or his behalf. VGI, National and Contran are the direct holders of approximately 81.7%, 9.5% and 1.6%, respectively, of the 114,680,014 Shares outstanding as of July 14, 2000 according to information furnished by the Company (the "Outstanding Shares"). Together, VGI, National and Contran may be deemed to control the Company. National, NOA and Dixie Holding are the direct holders of approximately 73.3%, 11.4% and 15.3%, respectively, of the outstanding common stock of VGI. Together, National, NOA and Dixie Holding may be deemed to control VGI. Contran and NOA are the direct holders of approximately 85.7% and 14.3%, respectively, of the outstanding common stock of National and together may be deemed to control National. Contran and Southwest are the direct holders of approximately 49.9% and 50.1%, respectively, of the outstanding common stock of NOA and together may be deemed to control NOA. Dixie Rice is the direct holder of 100% of the outstanding common stock of Dixie Holding and may be deemed to control Dixie Holding. Contran is the holder of 100% of the outstanding common stock of Dixie Rice and may be deemed to control Dixie Rice. Contran is the holder of approximately 88.9% of the outstanding common stock of Southwest and may be deemed to control Southwest. Substantially all of Contran's outstanding voting stock is held either by trusts established for the benefit of certain children and grandchildren of Harold C. Simmons (the "Trusts"), of which Mr. Simmons is the sole trustee, or by Mr. Simmons directly. As sole trustee of each of the Trusts, Mr. Simmons has the power to vote and direct the disposition of the shares of Contran stock held by each of the Trusts. Mr. Simmons, however, disclaims beneficial ownership of any shares of Contran stock that the Trusts hold. The Harold Simmons Foundation, Inc. (the "Foundation") directly holds approximately 0.5% of the Outstanding Shares. The Foundation is a tax-exempt foundation organized for charitable purposes. Harold C. Simmons is the chairman of the board and chief executive officer of the Foundation and may be deemed to control the Foundation. The Contran Deferred Compensation Trust No. 2 (the "CDCT No. 2") directly holds approximately 0.4% of the Outstanding Shares. Boston Safe Deposit and Trust Company serves as the trustee of the CDCT No. 2. Contran established the CDCT No. 2 as an irrevocable "rabbi trust" to assist Contran in meeting certain deferred compensation obligations that it owes to Harold C. Simmons. If the CDCT No. 2 assets are insufficient to satisfy such obligations, Contran is obligated to satisfy the balance of such obligations as they come due. Pursuant to the terms of the CDCT No. 2, Contran (i) retains the power to vote the Shares held directly by the CDCT No. 2, (ii) retains dispositive power over such shares and (iii) may be deemed the indirect beneficial owner of such shares. The Combined Master Retirement Trust (the "CMRT") directly holds approximately 0.1% of the Outstanding Shares. The Company established the CMRT as a trust to permit the collective investment by master trusts that maintain the assets of certain employee benefit plans the Company and related companies adopt. Mr. Simmons is the sole trustee of the CMRT and a member of the trust investment committee for the CMRT. Mr. Simmons is a participant in one or more of the employee benefit plans that invest through the CMRT. Mr. Harold C. Simmons is chairman of the board and chief executive officer of VGI, National, NOA, Dixie Holding, Dixie Rice, Southwest and Contran. By virtue of the holding of the offices, the stock ownership and his service as trustee, all as described above, (a) Mr. Simmons may be deemed to control such entities and (b) Mr. Simmons and certain of such entities may be deemed to possess indirect beneficial ownership of the Shares directly held by certain of such other entities. However, Mr. Simmons disclaims beneficial ownership of the Shares beneficially owned, directly or indirectly, by any of such entities, except to the extent of his vested beneficial interest in the Shares held by the CMRT and his interest as a beneficiary of the CDCT No. 2. Harold C. Simmons' spouse is the direct beneficial owner of 77,000 Shares, or approximately 0.1% of the Outstanding Shares. Mr. Simmons may be deemed to share indirect beneficial ownership of such Shares. Mr. Simmons disclaims all such beneficial ownership. The Company and Tremont Corporation ("Tremont") are the direct holders of approximately 59.6% and 20.2%, respectively, of the outstanding common stock of NL Industries, Inc. ("NL") and together may be deemed to control NL. The Company and NL are the direct holders of approximately 59.6% and 8.4%, respectively, of the outstanding common stock of Tremont. Together, the Company and NL may be deemed to control Tremont. The Company is the holder of 100% of the outstanding common stock of Valmont Insurance Company ("Valmont") and may be deemed to control Valmont. Mr. Harold C. Simmons is chairman of the board of NL and is a director of Tremont. The Reporting Persons understand that Valmont and a subsidiary of NL directly hold 1,000,000 Shares and 1,186,200 Shares, respectively. The Reporting Persons further understand that, pursuant to Delaware law, the Company treats the Shares that Valmont and NL hold directly as treasury stock for voting purposes. For the purposes of this Statement, the Shares that Valmont and NL hold directly are not deemed outstanding. Certain information concerning the directors and executive officers of the Reporting Persons, including offices held by Mr. Simmons is set forth on Schedule B attached hereto and incorporated herein by reference. (b) The principal offices of the Company, VGI, National, NOA, Dixie Holding and Contran are located at, and the business address of Harold C. Simmons is, Three Lincoln Centre, 5430 LBJ Freeway, Suite 1700, Dallas, Texas 75240-2697. The principal business address of Dixie Rice is 600 Pasquiere Street, Gueydan, Louisiana 70542. The principal business address of Southwest is 402 Canal Street, Houma, Louisiana 70360. The business addresses of the remaining directors and executive officers of the Reporting Persons are set forth on Schedule B to this Statement and incorporated herein by reference. (c) The Company is a diversified holding company engaged, through operating subsidiaries in the titanium dioxide pigments, component products (ergonomic computer support systems, precision ball bearing slides and security products), titanium metals products and waste management industries. In addition to activities engaged in through the Company and its subsidiaries, and in addition to holding the securities described above, (i) VGI is engaged in holding notes receivable; (ii) National is engaged in holding notes receivable and, directly or through other companies, in real estate, oil and gas activities and the rental and sales of compressors and related products; (iii) Dixie Holding is engaged in holding preferred stock of Contran; (iv) NOA is engaged in real estate and holding notes receivable; (v) Dixie Rice is engaged in land management, agriculture and oil and gas activities; (vi) Southwest is engaged in land management, agriculture and oil and gas activities; and (vii) Contran is engaged through other companies in the activities described above and in the production of, among other things, steel rod, wire and wire products. (d) None of the Reporting Persons or, to the best knowledge of such persons, any of the persons named in Schedule B to this Statement has been convicted in a criminal proceeding in the past five years (excluding traffic violations or similar misdemeanors). (e) None of the Reporting Persons or, to the best knowledge of such persons, any person named in Schedule B to this Statement, was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. (f) Contran, Dixie Holding and National are Delaware corporations. VGI is a Nevada corporation. NOA is a Texas corporation. Dixie Rice and Southwest are Louisiana corporations. Harold C. Simmons and all persons named on Schedule B to this Statement are citizens of the United States, except as otherwise indicated on such Schedule. Item 3. Source and Amount of Funds or Other Consideration The total amount of funds required by Contran to acquire the Shares reported in Item 5(c) was $3,518,397.50 (including commissions). Such funds were or will be provided by Contran's cash on hand and no funds were or will be borrowed for such purpose. The Reporting Persons understand that the funds required by each person named in Schedule B to this Statement to acquire Shares were from such person's personal funds. Item 4. Purpose of Transaction The Reporting Persons acquired Shares to obtain an equity interest in and control of the Company. By virtue of the relationships and positions held by Harold C. Simmons as reported in Item 2, Mr. Simmons, directly and indirectly through Contran, may be deemed to control the Company. Contran purchased the additional Shares reported in Item 5(c) of this Statement in order to increase its equity interest in the Company. Depending upon their evaluation of the Company's business and prospects, and upon future developments (including, but not limited to, performance of the Shares in the market, availability of funds, alternative uses of funds, and money, stock market and general economic conditions), any of the Reporting Persons or other entities that may be deemed to be affiliated with Contran may from time to time purchase Shares, and any of the Reporting Persons or other entities that may be deemed to be affiliated with Contran may from time to time dispose of all or a portion of the Shares held by such person, or cease buying or selling Shares. Any such additional purchases or sales of the Shares may be in open market or privately negotiated transactions or otherwise. The Reporting Persons understand that prior purchases of Shares by persons named in Schedule B to this Statement were made for the purpose of each such person's personal investment. Except as described in this Item 4, none of the Reporting Persons nor, to the best knowledge of such persons, any other person named in Schedule B to this Statement has formulated any plans or proposals which relate to or would result in any matter required to be disclosed in response to paragraphs (a) through (j) of Item 4 of Schedule 13D. Item 5. Interest in Securities of the Issuer. (a) VGI, National, Contran, the Foundation, the CDCT No. 2, the CMRT, Mr. Simmons' spouse and Mr. Simmons are the direct beneficial owners of 93,739,554, 10,891,009, 1,804,300, 600,000, 439,400, 115,000, 77,000 and 3,383 of the Shares, respectively. In addition, Harold C. Simmons holds stock options exercisable for 650,000 Shares, some of which will not vest within 60 days of the filing of this Statement. By virtue of the relationships described under Item 2 of this Statement: (1) VGI, Dixie Holding and Dixie Rice may each be deemed to be the beneficial owner of the 93,739,554 Shares (approximately 81.7% of the Outstanding Shares) that VGI directly holds; (2) National, NOA and Southwest each may be deemed to be the beneficial owner of the 104,630,563 Shares (approximately 91.2% of the Outstanding Shares) that VGI and National directly hold; (3) Contran may be deemed to be the beneficial owner of the 106,874,263 Shares (approximately 93.2% of the Outstanding Shares) that VGI, National, Contran and the CDCT No. 2 directly hold; and (4) Harold C. Simmons may be deemed to be the beneficial owner of the 108,319,646 Shares (approximately 93.9% of the sum of the Outstanding Shares and the 650,000 Shares that Mr. Simmons can acquire by exercise of stock options) that VGI, National, Contran, the Foundation, the CDCT No. 2, the CMRT, Mr. Simmons' spouse and himself directly hold and including the 650,000 Shares that Mr. Simmons can acquire by exercise of stock options, some of which will not vest within 60 days of the filing of this Statement. Except for the 3,383 Shares that he holds directly and to the extent of his vested beneficial interest in Shares directly held by the CMRT and his interest as a beneficiary of the CDCT No. 2, Mr. Simmons disclaims beneficial ownership of all Shares. (b) By virtue of the relationships described in Item 2: (1) VGI, Dixie Holding and Dixie Rice may each be deemed to share the power to vote and direct the disposition of the Shares that VGI directly holds; (2) National, NOA and Southwest may each be deemed to share the power to vote and direct the disposition of the Shares that VGI and National directly hold; (3) Contran may be deemed to share the power to vote and direct the disposition of the Shares that VGI, National, Contran and the CDCT No. 2 directly hold; and (4) Harold C. Simmons may be deemed to share the power to vote and direct the disposition of the Shares that VGI, National, Contran, the Foundation, the CDCT No. 2, the CMRT, Mr. Simmons' spouse and himself directly hold and including the 650,000 Shares that Mr. Simmons can acquire by exercise of stock options, some of which will not vest within 60 days of the filing of this Statement. (c) The table below sets forth purchases of the Shares by the Reporting Persons during the last 60 days. Contran executed all of such purchases on the New York Stock Exchange. Number of Approximate Price Per Share ($) Date Shares (exclusive of commissions) ---------------- --------------- ------------------- 05/22/00 6,000 $10.6250 05/23/00 300 $10.6250 05/30/00 4,100 $10.6250 05/31/00 500 $10.6250 06/09/00 100,000 $11.0000 07/03/00 20,000 $10.7500 07/03/00 4,000 $10.8125 07/03/00 9,800 $10.8750 07/03/00 6,000 $10.9375 07/03/00 101,200 $11.0000 07/05/00 10,000 $11.0000 07/06/00 1,800 $10.8750 07/06/00 29,500 $11.0000 07/07/00 9,100 $11.0000 07/11/00 2,400 $11.0000 07/12/00 5,000 $11.0000 07/17/00 5,000 $11.0000 07/17/00 5,000 $10.8750 (d) Each of VGI, National, Contran, the Foundation, the CDCT No. 2, the CMRT, Harold C. Simmons' spouse and Harold C. Simmons has the right to receive and the power to direct the receipt of dividends from, and proceeds from the sale of, the shares directly held by such entity or person. (e) Not applicable. Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer. Contran and National are parties to a $25.0 million revolving credit and letter of credit facility dated as of September 3, 1998, as amended and supplemented through September 2, 1999 with U.S. Bank National Association (the "U.S. Bank Facility"). Borrowings under the U.S. Bank Facility bear interest at the rate announced publicly from time to time by each bank as its base rate or at a rate of 1.75% over the London interbank offered rate of interest ("LIBOR"), are due August 30, 2000 or such extended maturity date as may be mutually agreed to, and are collateralized by, among other things, certain Shares. On July 14, 2000, no money had been borrowed, no letters of credit were outstanding and National had pledged 6,000,000 Shares under the U.S. Bank Facility. The foregoing summary of the U.S. Bank Facility is qualified in its entirety by reference to Exhibits 1 through 5 to this Statement, which are incorporated herein by this reference. Dixie Rice is a party to a $1.5 million credit facility dated as of August 18, 1986 with Southern Methodist University (the "SMU Facility"). Borrowings under the SMU Facility bear interest at the greater or 7.5% per annum or 76% of the Shearson Lehman Brothers, Inc. Bond Market Report -- Corporate Bond Index -- Long Term (Average) Yield, are due in forty equal quarterly installments beginning September 30, 1996 and ending on June 30, 2006 and are secured by certain Shares. As of July 14, 2000, $900,000 principal amount was outstanding under the SMU Facility and 300,000 Shares had been pledged under the SMU Facility. The Shares pledged under the SMU Facility are held directly by Contran but loaned to Dixie Rice pursuant to a Collateral Agreement, dated December 29, 1988 between Dixie Rice and Contran (the "Collateral Agreement"). The foregoing summary of the SMU Facility and the Collateral Agreement is qualified in its entirety by reference to Exhibits 6 and 7 to this Statement, respectively, which are incorporated herein by this reference. Other than as set forth above, none of the Reporting Persons or, to the best knowledge of such persons, any person named in Schedule B to this Statement has any contract, arrangement, understanding or relationship (legal or otherwise) with any person with respect to securities of the Company, including, but not limited to, transfer or voting of any such securities, finder's fees, joint ventures, loans or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies. Item 7. Material to be Filed as Exhibits. Exhibit 1* Loan Agreement dated as of September 3, 1998 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 2* Promissory Note dated September 3, 1998 in the original principal amount of $25 million payable to the order of U.S. Bank National Association and executed by Contran Corporation. Exhibit 3* Payment Guaranty dated September 3, 1998 executed by National City Lines, Inc. Exhibit 4* Securities Pledge Agreement dated as of September 3, 1998 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 5* Extension Agreement dated as of September 2, 1999 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 6 Loan and Pledge Agreement, dated as of August 18, 1986, between Dixie Rice Agricultural Corporation, Inc. and Southern Methodist University (incorporated by reference to Exhibit 11 to Amendment No. 59 to this Statement). Exhibit 7 Collateral Agreement, dated as of December 29, 1988, between Dixie Rice Agricultural Corporation, Inc. and Contran Corporation (incorporated by reference to Exhibit 12 to Amendment No. 59 to this Statement). Exhibit 8* Contran Deferred Compensation Trust No. 2 (Amended and Restated), dated as of February 11, 1999, between Contran Corporation and Boston Safe Deposit and Trust Company. - ---------- * Filed herewith.

Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Statement is true, complete and correct. Date: July 17, 2000 By: /s/ Harold C. Simmons -------------------------- Harold C. Simmons Signing in his individual capacity only.

Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Statement is true, complete and correct. Date: July 17, 2000 /s/ Steven L. Watson --------------------- Steven L. Watson Signing in the capacities listed on Schedule "A" attached hereto and incorporated herein by reference.

SCHEDULE A Steven L. Watson, as President or Executive Vice President of each of: CONTRAN CORPORATION DIXIE RICE AGRICULTURAL CORPORATION, INC. DIXIE HOLDING COMPANY NATIONAL CITY LINES, INC. NOA, INC. VALHI GROUP, INC. SOUTHWEST LOUISIANA LAND COMPANY, INC.

Schedule B The names of the directors and executive officers of Contran Corporation ("Contran"), Dixie Holding Company ("Dixie Holding"), Dixie Rice Agricultural Corporation, Inc. ("Dixie Rice"), National City Lines, Inc. ("National"), NOA, Inc. ("NOA"), Southwest Louisiana Land Company, Inc. ("Southwest") and Valhi Group, Inc. ("VGI") and their present principal occupations are set forth below. Except as otherwise indicated, the business address of each such person is 5430 LBJ Freeway, Suite 1700, Dallas, Texas 75240. Name Present Principal Occupation - --------------------------------------- ---------------------------------------------------------- Eugene K. Anderson Vice president of Contran, Dixie Holding, Dixie Rice, NOA, National, Southwest, VGI and the Company; and treasurer of the Harold Simmons Foundation, Inc. (the "Foundation"). F. Murlyn Broussard (1) Treasurer of Southwest. J. Mark Hollingsworth Vice president and general counsel of Contran, Dixie Holding, Dixie Rice, NOA, National, Southwest, VGI and the Company; general counsel of the Foundation; general counsel of CompX International Inc., a manufacturer of computer support systems, drawer slides and security products that is affiliated with the Company ("CompX"); general counsel of The Combined Master Retirement Trust, a trust the Company formed to permit the collective investment by trusts that maintain the assets of certain employee benefit plans the Company and related companies adopt (the "CMRT"). William J. Lindquist Director and senior vice president of Contran, Dixie Holding, NOA, National and VGI; senior vice president of Dixie Rice, Southwest and the Company. A. Andrew R. Louis Secretary of Contran, CompX, Dixie Holding, Dixie Rice, NOA, National, Southwest, VGI, and the Company. Kelly D. Luttmer Tax director of Contran, CompX, Dixie Holding, Dixie Rice, NOA, National, Southwest, VGI and the Company. Andrew McCollam, Jr. (1) President and director of Southwest; director of Dixie Rice; and a private investor. Harold M. Mire (2) Vice president of Dixie Rice and Southwest. Bobby D. O'Brien Vice president and treasurer of Contran, Dixie Holding, Dixie Rice, NOA, National, VGI and the Company; and vice president of Southwest. Glenn R. Simmons Vice chairman of the board of Contran, Dixie Holding, NOA, National, VGI and the Company; chairman of the board of Keystone Consolidated Industries, Inc. ("Keystone"), a manufacturer of steel rod, wire and wire products that is affiliated with Contran; director and executive vice president of Southwest and Dixie Rice; director of NL Industries, Inc., a producer of titanium dioxide pigments and a subsidiary of the Company ("NL"); director of Tremont Corporation, a holding company that primarily holds an interest in NL and an interest in Titanium Metals Corporation, a producer of titanium metal products ("TIMET"); and a director of CompX and TIMET. Harold C. Simmons Chairman of the board and chief executive officer of Contran, Dixie Holding, Dixie Rice, the Foundation, NOA, National, Southwest, VGI and the Company; chairman of the board of NL; director of Tremont; and trustee and member of the trust investment committee of the CMRT. Richard A. Smith (2) Director and president of Dixie Rice. Gregory M. Swalwell Vice president and controller of Contran, Dixie Holding, NOA, National, VGI and the Company; vice president of Dixie Rice and Southwest. Steven L. Watson Director and president of Contran, Dixie Holding, NOA, National, VGI and the Company; director and executive vice president of Dixie Rice; director, vice president and secretary of the Foundation; executive vice president of Southwest; and a director of CompX, Keystone and TIMET. - ---------- (1) The principal business address for Messrs. Broussard and McCollam is 402 Canal Street, Houma, Louisiana 70360. (2) The principal business address for Messrs. Mire and Smith is 600 Pasquiere Street, Gueydan, Louisiana 70542-0010.

SCHEDULE C Based upon ownership filings with the Securities and Exchange Commission or upon information provided by the persons listed on Schedule B to this Statement, such persons may be deemed to own personally and beneficially Shares, as outlined below: Name Shares Held Options Held (1) - ------------------------------- ------------------- ----------------- Eugene K. Anderson (2) 1,446 22,000 F. Murlyn Broussard (3) 1,157 -0- J. Mark Hollingsworth -0- 86,000 William J. Lindquist -0- 241,000 A. Andrew R. Louis -0- 25,000 Kelly D. Luttmer -0- 20,000 Andrew McCollam, Jr. 550 -0- Harold M. Mire 1,137 -0- Bobby D. O'Brien -0- 138,000 Glenn R. Simmons(4) 3,183 420,000 Harold C. Simmons(5) 80,383 550,000 Richard A. Smith 2,610 -0- Gregory M. Swalwell(6) 1,166 103,000 Steven L. Watson(7) 18,635 310,000 - ---------- (1) Represents Shares issuable pursuant to the exercise within 60 days of the date of this Statement of stock options. (2) The Reporting Persons understand that the Shares indicated as held by Eugene K. Anderson include 1,446 Shares held in his individual retirement account. (3) The Reporting Persons understand that the Shares indicated as held by F. Murlyn Broussard include 1,157 Shares held in his individual retirement account. (4) The Reporting Persons understand the Shares indicated as held by Glenn R. Simmons include 2,383 Shares held in his individual retirement account. The Reporting Persons further understand that the Shares indicated as held by Mr. Simmons also include 800 Shares held in his wife's retirement account, with respect to which Mr. Simmons disclaims beneficial ownership. (5) The Reporting Persons understand that the Shares indicated as held by Harold C. Simmons include 77,000 Shares held by Mr. Simmons wife, with respect to all of which beneficial ownership is disclaimed by Mr. Simmons. Mr. Simmons may be deemed to possess indirect beneficial ownership of the Shares set forth in Item 5(a) of this Statement, held by other Reporting Persons. Item 5 of this Statement reports all Shares issuable pursuant to the exercise of Mr. Simmons' stock options, regardless of vesting, while this Schedule C reports only those Shares that Mr. Simmons can receive within 60 days of the date of this Statement upon exercise of his stock options. Mr. Simmons disclaims beneficial ownership of all Shares except for the 3,383 Shares that he holds directly and to the extent of his vested beneficial interest in Shares directly held by the CMRT and his interest as a beneficiary of the CDCT No. 2. (6) The Reporting Persons understand that the Shares indicated as held by Gregory M. Swalwell include 1,166 Shares held in his individual retirement account. (7) The Reporting Persons understand that the Shares indicated as held by Steven L. Watson include 3,035 Shares held in his individual retirement account.

EXHIBIT INDEX Exhibit 1* Loan Agreement dated as of September 3, 1998 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 2* Promissory Note dated September 3, 1998 in the original principal amount of $25 million payable to the order of U.S. Bank National Association and executed by Contran Corporation. Exhibit 3* Payment Guaranty dated September 3, 1998 executed by National City Lines, Inc. Exhibit 4* Securities Pledge Agreement dated as of September 3, 1998 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 5* Extension Agreement dated as of September 2, 1999 among Contran Corporation, National City Lines, Inc. and U.S. Bank National Association. Exhibit 6 Loan and Pledge Agreement, dated as of August 18, 1986, between Dixie Rice Agricultural Corporation, Inc. and Southern Methodist University (incorporated by reference to Exhibit 11 to Amendment No. 59 to this Statement). Exhibit 7 Collateral Agreement, dated as of December 29, 1988, between Dixie Rice Agricultural Corporation, Inc. and Contran Corporation (incorporated by reference to Exhibit 12 to Amendment No. 59 to this Statement). Exhibit 8* Contran Deferred Compensation Trust No. 2 (Amended and Restated), dated as of February 11, 1999, between Contran Corporation and Boston Safe Deposit and Trust Company. - ---------- * Filed herewith.

                                 LOAN AGREEMENT

This loan agreement (this  "Agreement") is dated as of September 3, 1998, and is
among Contran  Corporation,  a Delaware corporation  ("Contran"),  National City
Lines,  Inc. ("NCL"),  a Delaware  corporation,  U.S. Bank National  Association
("U.S. Bank"), and the Bank Group (as defined below).

                                    Recitals

         A. Contran, NCL, the Agent, and the Bank Group desire to enter into the
Loan  Documents  under which the members of the Bank Group will  severally  make
Advances to Contran aggregating no more than the Maximum Availability at any one
time.

         B. The  members  of the Bank  Group  are  prepared  to  severally  make
Advances  and extend  credit to  Contran  aggregating  no more than the  Maximum
Availability  at any one  time  under  the  terms  and  conditions  of the  Loan
Documents.

                  NOW, THEREFORE, for value, it is agreed that:

I.       DEFINITIONS; CONSTRUCTION MATTERS.

A.   Definitions. As used in the Loan Documents:

         "Advance" means advances or extensions of credit made by the members of
                  the Bank Group to  Contran  under the Loan  Documents  for the
                  benefit of one or more  members of the Contran  Companies  and
                  the  issuance of letters of credit  under the Letter of Credit
                  Subfacility;

         "Agent"  means U.S. Bank or any  successor or assignee  when acting as
                  the  administrative  agent for the Bank Group under the
                  Loan Documents;

         "Allowed  Uses"  means the  general  corporate  purposes of the Contran
                  Companies including the purchase of margin stock;

         "Available" or "Availability"  means the difference between the Maximum
                  Availability  and the  outstanding  balance of the Advances at
                  the time that Availability is being determined;

         "Average Availability"   means  the  difference   between  the  Maximum
                  Availability and the average outstanding  principal balance of
                  the Advances during a Quarter;

         "Bank Group" means U.S. Bank and any banks hereafter added to this
                  Agreement by modification agreement;

         "Bank    Group Majority" initially means U.S. Bank. If other banks join
                  the Bank Group following the date hereof, the term "Bank Group
                  Majority"  shall mean  members  of the Bank  Group  holding at
                  least 51 percent of the total  amount of  Advances  hereunder,
                  but in any event not less than two banks;

         "Banking Day"  means a day when all  members of the Bank Group are open
                  to  the  public  at  their  main   offices  for   carrying  on
                  substantially  all of their banking  activities  (except for a
                  Saturday, Sunday, or a bank holiday and, with respect to LIBOR
                  Advances,  a day upon which  banks  transact  business  on the
                  London interbank market for Eurodollars;

         "Commitment Fee" means a fee, which is payable  quarterly in arrears as
                  of the last Banking Day of each  Quarter,  equal to 37.5 basis
                  points  per  annum  (365/366  day  year)   multiplied  by  the
                  difference  between the Maximum  Availability  and the average
                  outstanding  principal  balance of the advances and extensions
                  of credit  (excluding  standby  letters of credit)  during the
                  Quarter, on a prorated basis;

         "Contran Companies" means Contran and NCL and "Contran Company" means
                  any one of the Contran Companies;

         "Credit  Line"  means the  revolving  lines of credit  being  severally
                  extended  by the  members  of the  Bank  Group  to and for the
                  benefit  of  the  Contran   Companies   under  the  terms  and
                  conditions of the Loan Documents;

         "Default Rate" means the rate of interest that is otherwise  applicable
                  plus an additional 2% per annum;

         "Event   of Default" means those events,  occurrences, or other matters
                  identified  in Section  VI of this  Agreement,  that,  if they
                  occur or exist,  cause  Contran  to be in  default  under this
                  Agreement;

         "Eurodollars"  means U.S.  dollars to be  deposited in a bank or other
                  financial  institution  located  outside of the United
                  States;

         "Expiry  Date" means the date which is 364 days  following  the date of
                  this  Agreement,  and any anniversary of such date as extended
                  by mutual  agreement  of the  Contran  Companies  and the Bank
                  Group;

         "Guaranty"  means  the  unconditional  payment  guaranty  in  the  form
                  satisfactory  to the Bank Group to be issued to each member of
                  the Bank Group by NCL contemporaneously  with the execution of
                  this Agreement;

         "Hazardous Material" or "Hazmat" means any waste,  substance,  mixture,
                  pollutant  or  contaminant  defined  as  hazardous,  toxic  or
                  radioactive under any federal, state, or local statutory laws,
                  regulations,  or  orders  and  includes,  whether  or  not  so
                  defined,  petroleum and natural gas products,  polychlorinated
                  biphenyls and asbestos-containing materials;

         "Interest Period" means as of the end of each calendar  month for Prime
                  Rate Advances and a period of 1 month, 2 months, 3 months or 6
                  months as selected by Contran for each LIBOR Advance,  and, if
                  any Interest  Period would otherwise end on a day which is not
                  a  Banking  Day,  such  Interest  Period  will end on the next
                  succeeding  Banking  Day  unless  such  day  falls in the next
                  calendar month in which case that Interest  Period will end on
                  the last  Banking Day in the  immediately  preceding  calendar
                  month;

         "Letter  of Credit  Fee"  means a fee,  which is payable  quarterly  in
                  arrears as of the 10th Banking Day of each  Quarter,  equal to
                  1.75%  per  annum  (360 day year)  multiplied  by the  undrawn
                  amount of  outstanding  letters of credit during the preceding
                  Quarter, on a prorated basis.

         "Letter  of Credit  Subfacility"  means the  facility  under which U.S.
                  Bank will issue one or more standby letters of credit to third
                  parties  aggregating no more than  $15,000,000 at any one time
                  when  Contran  requests  a letter  of credit  by  executing  a
                  written  application  and  reimbursement   agreement  in  form
                  satisfactory  to U.S.  Bank.  All  letters  of credit  will be
                  subject  to U.S.  Bank's  standard  terms and  conditions  for
                  letters of credit.

         "LIBOR"  means  the  London  interbank  offered  rate of  interest,  as
                  determined  and  quoted  by  the  Agent,   for  a  deposit  of
                  Eurodollars in the amount of the Advance requested by Contran,
                  rounded up to the nearest  1/16th of 1% and  adjusted  for any
                  reserves, FDIC insurance premiums or other charges which would
                  be  payable  by any  member  of the Bank  Group in  connection
                  therewith;

         "LIBOR Advance" means an Advance to which the LIBOR applies;

         "LTV"    means the percentage  resulting from dividing the  outstanding
                  principal balance of the Advances on the date the LTV is being
                  determined by the value of the Pledged  Shares (as  determined
                  by  multiplying  the  number  of  Pledged  Shares   (initially
                  6,000,000) by the published closing price for the stock on the
                  preceding trading day, as published in the Wall Street Journal
                  or, if the prices are not published,  as reasonably determined
                  by the Agent);

         "Loan    Documents"  means this Agreement,  the Guaranties,  the Notes,
                  and the  Security  Documents,  as  originally  executed and as
                  hereafter extended and/or modified;

         "Maximum Availability"   means  $25,000,000  until  changed  by  mutual
                  agreement or reduced by Contran as provided in this Agreement;

         "NCL" means National City Lines, Inc., a Delaware corporation;

         "Note" means the note to be issued by Contran to the Bank Group in a
                  form acceptable to the Bank Group;

         "Notice  of  Borrowing"  means the notice of  intention to borrow to be
                  given by  Contran  to the  Agent in a form  acceptable  to the
                  Agent;

         "Obligations" means the debts and obligations of the Contran  Companies
                  to the Bank  Group  and the Agent  under  the Loan  Documents,
                  including repayment of the Advances;

         "Per     annum" means, when referring to interest, the actual number of
                  days elapsed in an Interest  Period over a denominator  of 360
                  days;

         "Percentage Interest"  means the percentage  interest of each member of
                  the Bank Group  determined  by dividing its  commitment by the
                  Maximum Availability;

         "Pledged Securities"  means  initially the  6,000,000  shares of common
                  stock  that  have  been  issued  by Valhi  and any  investment
                  securities  that are pledged to the Bank Group  under  Section
                  II.B.10 of this Agreement to secure payment and performance of
                  the Obligations;

         "Prime   Rate"  means the rate of  interest  publicly-announced  by the
                  Agent  from time to time as its  prime  rate of  interest  for
                  Advances to commercial customers;

         "Prime Rate Advance" means an Advance to which the Prime Rate is
                  applicable;

         "Prospective  Default"  means an Event of Default but for the giving of
                  any required  notice,  the passage of any applicable  grace or
                  notice period, or both;

         "Quarter" means a calendar quarter;

         "Security Document"  means  the  securities   pledge  agreement  to  be
                  executed by the Contran  Companies in a form acceptable to the
                  Agent and the related stock powers and compliance  forms,  and
                  any  security  agreement  and  financing  statements  that any
                  Contran Company  hereafter  executes to secure  performance of
                  the Obligations; and

         "Valhi" means Valhi, Inc., a Delaware corporation.

B.   Additional References.

     1.   Accounting Terms.  Accounting terms which are not specifically defined
          in the Loan Documents will be defined or interpreted and all reporting
          practices will be performed,  in accordance  with  generally  accepted
          accounting  principles  ("GAAP")  unless  the Bank Group has given its
          prior   written   consent  to  a  different   accounting   definition,
          interpretation or practice. Without thereby limiting the generality of
          the foregoing,  all financial  statements and  calculations  which are
          based on financial  condition or results of  operations as of specific
          dates or for specific  periods  (including  compliance  with financial
          covenants) will be calculated on a consolidated basis unless otherwise
          specified.  Whenever any Loan Document  calls for a payment to be made
          or an  event to occur  annually  or  quarterly,  the  reference  is to
          Contran's  fiscal  year  and  fiscal  quarter.   The  term  "financial
          statements"  means  balance  sheets and  statements of income and cash
          flows prepared in reasonable  detail,  on a comparative  basis, and in
          accordance with GAAP for the interim  (quarterly)  accounting  periods
          and balance sheets and statements of income,  cash flows,  and equity,
          and related footnotes, for the annual accounting periods.

     2.   Legal Terms.  The  definitions  and  substantive  terms of the Uniform
          Commercial  Code,  the  Uniform  Fraudulent   Transfer  Act,  and  the
          Bankruptcy Code will be used as additional aids to construction of the
          Loan Documents  before resort to any other source.  The word "execute"
          means to  subscribe  and  deliver  a  document.  The term  "investment
          security"   means  the   obligation   of  an   issuer,   or  a  share,
          participation,  or other  interest  in an issuer or in  property or an
          enterprise of an issuer, and any related  certificate and entitlement,
          including  a  warrant,  dividend,  or other  distribution  in  respect
          thereof.

     3.   Date/Time. Whenever a date or time is specified in the Loan Documents,
          it means such date or time in Portland, Oregon.

     4.   Schedules/Exhibits.  The  schedules  and  exhibits,  if any,  that are
          attached to this  Agreement  incorporated  into this Agreement by this
          reference.

     5.   Gender;  Number.  The Loan Documents are intended to be gender neutral
          and the neuter pronoun can refer not only to an organization  but also
          to an individual.  Use of the singular can include the plural and vice
          versa. Where the singular refers to several persons,  the liability of
          such persons is joint and several.

     6.   Conflicts. The terms and conditions of the Loan Documents are intended
          to complement and supplement  each other and are to be construed so as
          to be consistent  and  complimentary.  In the event that a conflict of
          terms cannot be reconciled, the terms and conditions of this Agreement
          will govern over any conflicting terms or conditions in any other Loan
          Document.

     7.   Captions.  Captions  and  headings  are  merely  for  convenience  and
          substantively are not a part of the Loan Documents.

     8.   Governing Law. Construction,  performance, and enforcement of the Loan
          Documents  will  be  governed  by the  substantive  provisions  (i.e.,
          without  regard to the rules for  conflict of laws) of Oregon law, but
          if the Bank Group has greater  rights or remedies  under  federal law,
          then such rights and remedies under federal law also will be available
          to the Bank.

     9.   Complete  Agreement.  The Loan Documents are the complete,  final, and
          exclusive  agreement of the parties.  No term or condition can or will
          be  explained,  supplemented,  waived,  or modified by conduct or oral
          agreement either before, at, or after signing and delivery of the Loan
          Documents.

II.  THE LINE OF CREDIT.

A.   Advances.

     1.   Commitment.  Upon  satisfaction  of the  conditions  precedent  by the
          Contran
          Companies or waiver thereof by the Bank Group, each member of the Bank
          Group severally  promises and agrees (commits) to make Advances and/or
          extend  credit  (all  such  Advances  and/or  extensions  of credit at
          substantially  the  same  time  being  an  "Advance")  to the  Contran
          Companies for the Allowed Uses until the Expiry Date as long as at the
          time of such  Advance (a) No Event of Default or  Prospective  Default
          exists under the Loan Documents, (b) the aggregate principal amount of
          all outstanding Advances and the requested Advance does not exceed the
          Maximum  Availability,  and (c) the LTV after  such  Advance  will not
          exceed 40%.

     2.   Revolving  Nature.  The commitments of the Bank Group are revolving in
          nature so the Contran  Companies  may borrow and repay at any time and
          from time to time  without  penalty or premium  (except  for  breakage
          charges  collectible in connection with full or partial  prepayment of
          LIBOR  Advances)  subject  to the  terms  and  conditions  of the Loan
          Documents.  LIBOR  Advances  mature and must be repaid or renewed at a
          new  LIBOR  or at the  Prime  Rate at the end of the  Interest  Period
          applicable  thereto.  Prime Rate Advances mature and must be repaid on
          the Expiry Date.

     3.   Notice of Borrowing.  In order to borrow  (obtain a LIBOR Advance or a
          Prime Rate  Advance),  convert a Prime Rate Advance to a LIBOR Advance
          or vice  versa,  or replace a LIBOR  Advance  with  another  new LIBOR
          Advance at the end of an Interest Period, Contran must submit a Notice
          of Borrowing to the Agent through an authorized representative (a) not
          later than 10 a.m. on the date of any requested Prime Rate Advance and
          (b)  not  later  than 9 a.m.  on the  third  Banking  Day  before  the
          effective  date of a LIBOR  Advance,  unless the Advance is  requested
          orally and the Agent  grants  the  request,  in which case  either the
          Advance will be repaid or a Notice of  Borrowing  will be submitted to
          the  Agent in  writing  within  48 hours  following  the oral  request
          (including any breakage charge related thereto).

          The Notice of  Borrowing  will specify the date when the Advance is to
          be funded,  converted,  or renewed, the amount thereof, the applicable
          interest  rate  and,  if the  LIBOR has been  selected,  the  Interest
          Period.  Each Notice of Borrowing and oral request will be irrevocable
          and the Agent and the Bank Group will be entitled to procure  funds in
          reliance  on such  Notice of  Borrowing  and oral  request;  provided,
          however, that Contran may withdraw any Notice of Borrowing at any time
          prior to the  funding  of such  Advance  as long as  Contran  pays all
          reasonable  direct costs and  expenses  (including  breakage  charges)
          incurred by any member(s) of the Bank Group in reliance on such Notice
          of Borrowing.  No LIBOR  Interest  Period may be selected that extends
          beyond the Expiry  Date.  The Prime  Rate will be  applicable  to each
          Advance unless Contran has properly selected the LIBOR.

     4.   Disbursement  of Proceeds.  All Advances  will be funded by wiring the
          proceeds thereof into Contran's general corporate checking account.

     5.   Interest Rates.  The rates of interest  payable by Contran will be (a)
          the Prime Rate on each  Prime  Rate  Advance  and (b) if  selected  by
          Contran, the LIBOR plus a margin of 1.75% (175 basis points) per annum
          on  each  LIBOR  Advance  in the  minimum  amount  of  $1,000,000  and
          increments of $500,000 in excess of the minimum amount.

     6.   Principal Repayment.  Contran will repay the Advances on or before the
          Expiry Date.

B.   General Matters.

     1.   Medium.  All Advances  will be made by, and all payments  will be made
          to, the Bank Group in immediately available U.S. dollars.

     2.   Interest  Payments.  Interest on Prime Rate Advances is due monthly in
          arrears.  Interest  on LIBOR  Advances is due in arrears at the end of
          the Interest  Period and, in the event of any 6-month  LIBOR  Interest
          Period, at the end of the first 90 days of the Interest Period.

     3.   Payments.  Any payment received by the Agent after noon will be deemed
          to have been made on the next following  Banking Day and interest will
          accrue to that day. In the event that the date  specified  for payment
          is not a Banking  Day,  then  interest  will accrue to and the payment
          will be made on the next  following  Banking Day;  provided,  however,
          that if the next Banking Day following  the end of an Interest  Period
          for a LIBOR Advance is in the following  calendar month,  then payment
          or renewal of the LIBOR  Advance  will be due on the last  Banking Day
          which precedes the end of that Interest  Period.  All payments will be
          applied,  to the extent  amounts  are due,  first to costs  (including
          breakage charges), then to fees, then to accrued interest, and finally
          to principal.

     4.   Breakage  Charge.  Contran may prepay a LIBOR  Advance only upon three
          days' advance  written notice and upon payment of the breakage  charge
          specified in the Note.

     5.   Terminating  LIBOR. The Bank Group is offering the LIBOR to Contran on
          the  assumption  that there will  continue  to be an active  interbank
          market  in  Eurodollars.  If that  market  ceases  to  exist  or if it
          otherwise  becomes  illegal or impractical  for any member of the Bank
          Group to fund an Advance with reference to this source of funds,  then
          the  Bank  Group  member(s)  so  affected  will  give  notice  of such
          illegality or impracticality to Contran and any future loan from those
          members of the Bank Group will be at the Prime Rate.

     6.   Increased  Costs.  If any  member  of the Bank  Group is  required  to
          increase its reserves, insurance premiums, or regulatory capital or to
          pay  additional  taxes  (other  than  income  taxes)  in order to make
          Advances to Contran because of the future enactment,  promulgation, or
          amendment of any  statute,  regulation,  or order by a  government  or
          governmental  subdivision or agency,  then Contran will reimburse such
          member(s) of the Bank Group on demand for all such increased  costs as
          estimated in writing with reasonable particularity by such member.

     7.   Notes;  Promise of Repayment.  Contran  promises and agrees to issue a
          note to each  member of the Bank Group in the amount of such  member's
          commitment and to repay all Advances,  plus interest,  fees, costs and
          expenses,  to the order of each member of the Bank Group in accordance
          with such member's Percentage Interest.

     8.   Guaranty;  Promise of Repayment.  NCL promises and agrees to issue the
          Guaranty to each member of the Bank Group and to repay each Bank Group
          member's  Percentage  Interest of all Advances,  plus interest,  fees,
          costs and  expenses,  to such member's  order in  accordance  with the
          terms hereof and of the note.

     9.   Nature of  Liability.  Contran  and NCL are  jointly,  severally,  and
          primarily liable for performance of the Obligations.

     10.  Maintenance of Loan-to-Value Ratio:  Mandatory Prepayment or Pledge of
          Additional Pledged Securities. If the outstanding principal balance of
          the  Advances  at any time  results  in an LTV of more than  40%,  the
          Contran  Companies  immediately  will either (a) make a prepayment  of
          principal  so as to reduce  the LTV to 40% or less  and/or  (b) pledge
          additional  investment  securities in quality and quantity  reasonably
          acceptable  to the Bank  Group so as to reduce the LTV to 40% or less.
          For the purposes of this paragraph,  the Bank Group  acknowledges  and
          agrees that the Contran  Companies always may pledge additional shares
          of Valhi common stock owned by a Contran  Company in order to meet the
          LTV  requirement.  Prepayments  required  under this  section  will be
          applied  first to Prime Rate  Advances,  because such  Advances may be
          prepaid  without  payment of the  breakage  charge,  and then to LIBOR
          Advances in an order which  first pays the LIBOR  Advance(s)  with the
          shortest remaining time until maturity, then the next shortest period,
          etc. If additional  investment securities are pledged and the value of
          the pledged  securities  later  increases,  the Agent  will,  upon the
          written  request  of the  Contran  Companies,  return  to the  Contran
          Companies any of the  additional  pledged  securities  (including  the
          Valhi  shares  pledged  initially)  which  are not then  necessary  to
          maintain the LTV at 40% or less.

     11.  Waiver;   Forbearance.   Each  Contran   Company  waives   acceptance,
          presentment  (including  notice of dishonor) and all claims,  offsets,
          defenses,  and  counterclaims  based on  suretyship  or  impairment of
          collateral.  Without  limiting the  foregoing,  each  Contran  Company
          consents  to  extension  of due  dates,  material  modifications,  and
          impairment  of  contribution  rights  and the  value of  interests  in
          collateral without prior notice or demand.

C.   Letters of Credit.

     1.   Commitment. Upon the written application of Contran and such terms and
          conditions as U.S. Bank may reasonably require,  U.S. Bank will issue,
          until 30 days prior to the Expiry Date,  standby  letters of credit to
          beneficiaries  designated  by Contran  for terms that  expire no later
          than the  Expiry  Date.  Contran  will pay all  Letter of Credit  Fees
          associated   with   issuance   of  the   letters  of  credit  and  the
          administrative  charges  normally  charged by U.S.  Bank in connection
          with such letters of credit and drawings thereon.

     2.   Participation.  Each  member of the Bank  Group will  participate,  in
          accordance  with its  Percentage  Interest,  in U.S.  Bank's risks and
          obligations under such letters of credit and in Contran's  obligations
          for immediate  reimbursement of the amount of any drawings made by the
          beneficiaries  (which includes  successors and transferees)  under any
          letter of credit.  This  participation will be as a primary obligor to
          U.S. Bank and not as a surety for Contran.  Each of the members of the
          Bank Group will pay to U.S. Bank such lender's  Percentage Interest of
          any drawing made under any letter of credit within 24 hours of receipt
          of notice from U.S.  Bank of such drawing  regardless of the existence
          of an Event of Default or Prospective Default, or any offset, defense,
          or counterclaim of Contran.

     3.   Reduction in  Availability.  Upon issuance of a letter of credit under
          this  subfacility,  the amount of  Availability  will be reduced in an
          equivalent  amount, but no interest or fees (except U.S. Bank's normal
          issuance  and usage fees and  charges  and the letter of credit  fees)
          will be payable on such amount  until a drawing is made on such letter
          of credit.

     4.   Reimbursement.  Contran  promises and agrees to immediately  reimburse
          U.S. Bank for the amount of any drawing made by any beneficiary  under
          any  letter  of  credit  issued  by U.S.  Bank  upon  the  application
          hereunder of Contran without offset,  defense, or counterclaim against
          U.S. Bank other than payment  resulting from gross  negligence of U.S.
          Bank  and  without  regard  to  any  claims,  offsets,   defenses,  or
          counterclaims  that  Contran  has or may  claim  to have  against  its
          liability  to  the  beneficiary  of  such  letter  of  credit.  If not
          reimbursed  on the  same  Banking  Day  and  if  Contran  is not  then
          insolvent or the subject of any insolvency  proceeding,  the amount so
          paid by U.S.  Bank will be deemed to be an  Advance  under the  Credit
          Line in that  amount to  Contran  as of the date when the draw is paid
          and will bear  interest at the Prime Rate until repaid or renewed as a
          LIBOR loan.

III.     CONDITIONS PRECEDENT.

A.   Conditions to First Borrowing. The following are conditions precedent which
     must be  satisfied  by the  Contran  Companies  or waived by the Bank Group
     Majority prior to the first Advance:

     1.   Loan Documents. Contran has duly executed (signed,  acknowledged where
          appropriate, and delivered) the Loan Documents;

     2.   Guaranties.  NCL has executed  the Guaranty and the Contran  Companies
          have executed the Security Documents;

     3.   Corporate Documents. Each Contran Company has delivered certified true
          copies of currently  effective (a) articles of incorporation,  bylaws,
          and similar governance documents (its "organization  documents"),  (b)
          resolutions  of its board of directors  authorizing it to execute each
          of the Loan  Documents  to which such  organization  is a party and to
          perform the Obligations, and specifying the representative(s) who will
          execute the Loan  Documents on its behalf (and,  for Contran,  who may
          request Advances) (its "borrowing resolutions"), and (c) an incumbency
          certificate  executed by its corporate  secretary  containing specimen
          signatures of the  representatives who will execute the Loan Documents
          and,  in the  case  of  Contran,  request  Advances  (its  "incumbency
          certificate");

     4.   Representations  and Warranties.  The  representations  and warranties
          made by the Contran Companies in the Loan Documents are true, complete
          and  correct in all  material  respects  as of the date upon which the
          Loan  Documents are executed and the date upon which the first loan is
          requested and a duly authorized representative of each Contran Company
          has executed a  certificate  dated as of the date of the first Advance
          certifying   the   continued   accuracy   and   completeness   of  the
          representations and warranties;

     5.   Legal Opinion.  Contran's  general  counsel has rendered an opinion to
          the Bank Group  opining that as of the date of the Loan  Documents (a)
          each Contran Company is a validly existing Delaware  corporation,  (b)
          each Contran  Company has been duly  authorized to execute each of the
          Loan  Documents to which such  organization  is a party and to perform
          the  Obligations,  (c) each of the Loan Documents is the legally valid
          and binding  obligation of each Contran Company who is a party thereto
          and is enforceable in accordance  with its terms except as enforcement
          may be limited by  insolvency  or other  similar  laws  affecting  the
          rights and  remedies of creditors  generally,  general  principles  of
          equity,  whether  applied  by a  court  of law or  equity,  and  other
          generally  applicable rules of law, and (d) the Security Documents are
          a form  sufficient  to create a lien on or  security  interest  in all
          right,  title,  and  interest of the Contran  Companies in the Pledged
          Securities;

     6.   Perfection.   The  Contran  Companies  have  delivered  to  the  Agent
          possession of the certificates  evidencing the investments  securities
          which are part of the Pledged  Securities  with stock powers signed in
          blank and related compliance  certificates and the Agent has perfected
          its security interest of the Bank Group in any other types or items of
          the collateral;

     7.   Legal  Matters.  All matters  pertaining to the Loan Documents and the
          Advances are  reasonably  satisfactory  to the Agent and the Agent has
          received all  certificates,  insurance  policies and documents that it
          reasonably  requires  to  establish  compliance  with  the  terms  and
          conditions of the Loan Documents.

B.   Subsequent  Advances.  The following are conditions precedent which must be
     satisfied  by  Contran  or waived by the Bank  Group  prior to any  Advance
     subsequent to the first Advance:

     1.   No default.  No Event of Default or Prospective  Default exists on the
          date of such Advance after giving effect to such Advance;

     2.   Representations  and Warranties.  The  representations  and warranties
          made by the Contran  Companies  in the Loan  Documents  continue to be
          true, complete and correct in all material respects; and

     3.   LTV Compliance.  After giving effect to the requested Advance, the LTV
          will be 40% or less.

IV.      REPRESENTATIONS AND WARRANTIES.

A.   Representations  and  Warranties.   Each  Contran  Company  represents  and
     warrants to the Bank Group that:

     1.   Corporate Organization. Each Contran Company is a Delaware corporation
          which is duly organized and is duly qualified to transact  business in
          all other  states and  countries  where the failure to be so qualified
          would have a material  adverse  impact on its business  operations  or
          ownership of property;

     2.   Authorization.  Each  Contran  Company  has been  duly  authorized  to
          execute  each of the Loan  Documents to which such  organization  is a
          party and to perform the Obligations;

     3.   Due  Execution  and  Delivery.   Each  Loan  Document  to  which  such
          organization is a party has been duly executed by a representative  of
          such organization who has been duly authorized to perform such acts;

     4.   Legally Binding Documents. Each Loan Document is the legally valid and
          binding  obligation  of each  Contran  Company  who is a party to such
          document and is enforceable  against such  organization  in accordance
          with its terms except as such enforcement may be limited by insolvency
          or other  similar laws  affecting the rights and remedies of creditors
          generally,  general principles of equity whether applied by a court of
          law or equity, and generally applicable rules of law;

     5.   Accurate  Financial  Statements.  The  annual  and  interim  financial
          statements  of the  Contran  Companies  furnished  to the  Bank  Group
          present fairly the financial  position of such Contran Companies as of
          the  date  of  such  financial  statements  and  the  results  of  the
          operations  and  changes  in  financial  position  for the  annual and
          interim periods then ending /1/;

     6.   No  Violations.  Neither the  execution of the Loan  Documents nor the
          performance of the Obligations by the Contran  Companies is prohibited
          by or will subject any Contran Company to any fine, penalty or similar
          sanction under, any statute,  regulation,  or order applicable to such
          organization;

     7.   No  Proceedings.  There  are no  civil,  criminal,  or  administrative
          proceedings  now pending or overtly  threatened in writing against any
          Contran Company which has not been disclosed in the audited  financial
          statements  which  have been  provided  to the Bank or  separately  in
          writing  and which,  if  adversely  determined,  would have a material
          adverse  effect on the ability of the Contran  Companies  to repay the
          Advances and perform their other  obligations  to the Bank Group under
          the Loan Documents;

     8.   No Breach or Default.  No Contran  Company is now, or by reason of the
          execution of the Loan Documents or performance of the Obligations will
          be, in breach of or in default  under any  "employee  pension  benefit
          plans" or  "employee  benefit  plans" (as those  terms are  defined by
          Section 3 of the Employee  Retirement  Income Security Act of 1974, as
          amended)  to which  such  organization  is a party or  sponsor  in any
          material  respect  or  any  other  material   agreement,   instrument,
          undertaking,  or other contract to which such  organization is a party
          or by which its property is bound if such breach or default would have
          a material  adverse effect on the ability of the Contran  Companies to
          repay the Advances  and perform  their  Obligations  to the Bank Group
          under the Loan Documents;
- --------
/1/ The financial  statements for NCL may omit footnote  disclosures that
  would normally be required under GAAP.

     9.   Tax Returns;  Taxes.  Each Contran  Company has filed all material tax
          returns  that it is required by any statute,  regulation,  or order to
          file and has paid when due all  material  taxes  imposed  on it or its
          property;

     10.  Compliance  with Law.  Each Contran  Company is in  compliance  in all
          material  respects with all statutory  laws,  regulations,  and orders
          that  are  applicable  to  such   organizations   and  their  property
          specifically including, but not limited to, environmental laws;

     11.  Hazardous  Material.  To the best  knowledge  of Contran,  there is no
          hazardous material being released,  and no hazardous material has been
          released,  from or at any  real  property  owned  or  operated  by any
          Contran Company in quantities which would trigger such  organization's
          obligation under applicable environmental laws to report the existence
          of such waste or to remove and  dispose of such waste or to  remediate
          the effects of a prior  discharge  thereof  except as disclosed to the
          Bank in writing before the date of the Loan Documents;

     12.  Solvency.  No  Contran  Company  is  insolvent  or the  subject of any
          insolvency  proceedings  and each Contran Company has capital which is
          reasonably  adequate to conduct its business in the manner in which it
          intends to conduct such business;

     13.  Investment Company Act. No Contran Company is an "investment  company"
          as that term is defined by Section 3(a) of the Investment  Company Act
          of 1940;

     14.  No Material Adverse Change.  There has been no material adverse change
          in the business operations,  financial position,  or cash flows of the
          Contran  Companies  since  the  date of the  latest  annual  financial
          statement  provided  to  the  Bank  Group  before  the  date  of  this
          Agreement;

     15.  Ownership of Pledged Securities. Each Contran Company owns the item or
          items of Pledged Securities that such organization purports to own and
          such property is free and clear of all liens, security interests,  and
          claims except to the extent that a security interest is granted to the
          Bank Group in the Loan Documents; and

     16.  Year 2000.  The Contran  Companies  have  reviewed and assessed  their
          business  operations and computer  systems and applications to address
          the "year 2000  problem"  (that is,  that  computer  applications  and
          equipment  used  by the  Contran  Companies,  directly  or  indirectly
          through   third   parties,   may  be   unable  to   properly   perform
          date-sensitive  functions before,  during,  and after January 1, 2000)
          and reasonably believe that the year 2000 problem will not result in a
          material adverse change in the Contran  Companies'  business condition
          (financial or otherwise), operations, properties, or prospects, or the
          Contran  Companies'  ability to repay the Advances  and perform  their
          Obligations to the Bank Group under the Loan Documents.

B.   Reaffirmation.  The  Contran  Companies  will be  deemed  to  reaffirm  the
     accuracy and completeness of the foregoing  representations  and warranties
     each time that an Advance is requested.

V.       COVENANTS.

A.   Affirmative  Covenants.  The Contran Companies promise and agree that until
     the  Advances  are  repaid  and all other  Obligations  are  discharged  by
     performance, each Contran Company will, unless the Agent otherwise consents
     in writing:

     1.   Preserving   Existence.   Preserve   its  legal  status  and  material
          franchises   and  pay  all  material  taxes  and  fees  in  connection
          therewith;

     2.   Compliance with Laws and Orders.  Comply in all material respects with
          all statutory laws,  regulations,  and orders  applicable to it or its
          property  specifically  including,  but not limited to,  environmental
          laws, if  noncompliance  would or is likely to have a material adverse
          effect  on the  financial  condition  or  business  prospects  of such
          organization or its ability to perform the Obligations;

     3.   Insurance.  Obtain and maintain with  responsible  carriers or through
          self-insurance such workers' compensation, fire with extended coverage
          endorsement,  public  liability  and  property  damage  and such other
          insurance in such coverage  amounts,  deductibles  and terms as may be
          consistent with industry  practices and will provide  evidence of such
          insurance and payment of premiums to the Agent as and when required by
          the Agent;

     4.   Payment and Performance of Debts, Liabilities and Obligations. Pay and
          perform when due all material debts and obligations  owed to all third
          persons,  specifically including,  but not limited to, its obligations
          under any "employee pension benefit plans" or "employee benefit plans"
          (as those  terms are defined by Section 3 of the  Employee  Retirement
          Income  Security  Act of 1974,  as  amended) to which such person is a
          party  or  sponsor  in any  material  respect  or any  other  material
          agreement,  instrument,  undertaking,  or other contract to which such
          person is a party or by which its property is bound;

     5.   Books and  Records.  Keep  accurate  and  complete  books and  records
          relating  to  the  Pledged   Securities   and  its  other  assets  and
          liabilities,   management   and  employees,   production,   marketing,
          operations, performance and earnings;

     6.   Tax Returns.  File all tax returns  required by statute,  regulations,
          and orders to be filed and pay all material taxes when due;

     7.   Financial  Statements.  Deliver  to each  member of the Bank Group (a)
          unaudited interim consolidated  financial statements of Contran within
          75  days  following  the  end of each  of the  first  three  quarterly
          reporting periods of each fiscal year, (b) audited annual consolidated
          financial  statements of Contran  within 120 days following the end of
          each  fiscal  year,  accompanied  by a copy  of an  unqualified  audit
          opinion issued by certified public accountants reasonably satisfactory
          to the Bank Group and, if issued, copies of such auditor's "management
          letter," and (c) unaudited  consolidating  financial statements of NCL
          within 75 days following the end of each of the first three  quarterly
          reporting  periods and within 120 days of the end of each fiscal year,
          which  unaudited  consolidating  financial  statements  may  omit  all
          footnote   disclosures   normally  required  in  financial  statements
          prepared in accordance with GAAP;

     8.   Auditor  Certificates.  Deliver to each  member of the Bank Group with
          the audited annual  consolidated  financial  statements of Contran the
          certificate  of the auditors  addressed  to the Agent and  certifying,
          based only on review of the annual  audited  financial  statements and
          the Loan  Documents,  that the  auditors are not aware of any Event of
          Default or Prospective  Default or, if such auditors are aware of such
          event, specifying such events with reasonable particularity; provided,
          however,  that in connection  therewith the auditors shall be under no
          obligation  to go beyond the  bounds of  generally  accepted  auditing
          standards   for  the  purpose  of   certifying   such   compliance  or
          non-compliance;

     9.   Additional Information; Compliance Certificates. Provide to the Agent:

          a)   A Notice of Borrowing when and as Contran requests Advances;

          b)   Such additional  information as and when reasonably  requested by
               the Bank Group or the Agent as to the Pledged  Securities and the
               business operations and financial condition of any one or more of
               the Contran Companies;

          c)   Notice of any material  adverse change in the business  operation
               or financial condition of any Contran Company; and

          d)   Within 10 Banking Days after any Contran Company receives written
               notice thereof,  a report of each pending and overtly  threatened
               claim,   litigation,   and  governmental   proceeding  which,  if
               adversely   determined,   probably  would  involve  an  aggregate
               liability of $5,000,000 or more;

          e)   Quarterly and annual  compliance  certificates,  to accompany the
               quarterly  and  annual  financial  statements,  signed  by a duly
               authorized  representative  of the Contran Companies which either
               (A)  certifies  that there is no Event of Default or  Prospective
               Default as of the date of the certificate to the knowledge of the
               representative  or (B) specifies  with  reasonable  particularity
               such events then  existing  and known to the  representative  and
               outlines its plan for cure thereof;

          f)   Copies of any filings or reports that any Contran  Company  files
               or  makes  with  any  federal  or  state  government  department,
               commission,  or agency  regulating  investment  securities as and
               when such filings or reports are filed or made to such government
               department, commission, or agency; and

          g)   If Contran  becomes aware of any Event of Default or  Prospective
               Default between  quarterly and annual  reporting  dates,  written
               notice of such Event of Default or Prospective  Default within 10
               days after Contran's  senior  management  learns of such Event of
               Default or Prospective Default.

     10.  Inspection  Rights. The Agent will have the right to discuss financial
          statements and other books and records with  accounting  employees and
          outside  accountants of each Contran Company and the Contran Companies
          will ensure that the Agent may exercise and enjoy such rights  subject
          to the  obligation of the Agent to give  reasonable  advance notice to
          the Contran Companies under the  circumstances.  The Contran Companies
          will  reimburse  the  Agent  for all  reasonable  costs  and  expenses
          incurred by the Agent in connection with the foregoing.  All employees
          and outside  accountants are hereby authorized to discuss such matters
          with the Agent,  to provide  such  additional  books and  records  and
          information as may be reasonably  requested by the Agent in connection
          therewith,  and to bill the Contran  Companies for such services.  The
          Agent  also will give prior  notice to the  Contran  Companies  of the
          intention to discuss such matters with the outside  accountants  so as
          to provide the opportunity to the management of the Contran  Companies
          to be present at such discussions.

     11.  Contest Rights.  Notwithstanding the foregoing covenants, each Contran
          Company will have the right to contest its obligations under statutory
          laws, regulations,  orders, and contracts (other than the Obligations)
          and for  payment of taxes as long as (a) such  contest is started  and
          continued  in  good  faith  and by  appropriate  means,  (b)  adequate
          reserves  are  maintained  by the  Contran  Company  engaging  in such
          contest for  performance  of the obligation in the event of an outcome
          of such  contest that is adverse to the Contran  Company  involved and
          (c) the Bank Group is  notified of any such  contest  where an adverse
          outcome probably would involve a payment of $5,000,000 or more.

B.   Negative Covenants. Each Contran Company promises and agrees that until the
     Advances  are  repaid and all other  Obligations  have been  discharged  by
     performance,  it will not,  unless the Bank  Group  otherwise  consents  in
     writing:

     1.   Additional  Debt.  Directly  or  indirectly  (by  borrowing,  deferred
          purchase,  guarantee,  or otherwise)  incur more than $25,000,000 as a
          group in  funded  debt in  excess  of that  immediately  available  or
          outstanding  to the Contran  Companies  on the date of this  Agreement
          except for loans occurring in the ordinary course of business from the
          Contran  Companies to each Contran  Company  and/or Valhi and/or other
          affiliates of Contran;

     2.   Asset  Transfers.  Transfer  any  material  or  essential  part  of or
          interest  in their  property  to any third  party  except for sales of
          inventory  and  surplus  or  obsolete  equipment,  the  collection  of
          accounts,  and sales and  exchanges  of other  assets in the  ordinary
          course of business;

     3.   Transactions   with  Affiliates.   Engage  in  any  material  business
          transaction  with any  affiliate  or other  third  party on terms less
          favorable to the Contran Company than those which could be obtained at
          the time thereof in arm's-length dealings with a nonaffiliated person;

     4.   Business Combinations.  Engage in any merger, acquisition, or exchange
          of equity  securities  unless the  Contran  Company  is the  surviving
          corporation  and the Contran  Companies  continue to be in  compliance
          with all of the terms and conditions of the Loan Documents; or

     5.   Use of  Proceeds.  Use the  proceeds  of any loan for any  purpose not
          permitted by the Loan Documents.

VI.      DEFAULT.

TIME IS OF THE ESSENCE.  Contran will be in default under the Loan Documents if:

A.   Payment  Failure.  The  Contran  Companies  fail to  make  any  payment  of
     principal  when due or fail to make any payment of interest,  fees or costs
     within three Banking Days following the due date;

B.   LTV Compliance.  The Contran  Companies fail to prepay  principal or pledge
     additional  Pledged  Securities within three Banking Days following receipt
     of  written  notice  from the Agent  that the LTV  exceeds  40% if and when
     required by the Agent under the terms of this Agreement.

C.   Misrepresentation. Any Contran Company knowingly misrepresents any material
     fact to the Bank Group or the Agent or fails to  disclose to the Bank Group
     or the Agent a material  fact which is  necessary  to make the facts  which
     have been  disclosed not misleading in the  circumstances  under which they
     are made;

D.   Affirmative  Covenants.  The  Contran  Companies  fail to  comply  with the
     affirmative covenants contained in any of the Loan Documents within 30 days
     following  the date such  compliance  is  demanded by the Bank Group or, if
     such  compliance  cannot be completed  within that 30-day period,  fails to
     substantially  commence  compliance  within that 30-day  period and then to
     complete  such  compliance as soon as possible  thereafter  but in no event
     later than 60 days after such compliance is demanded;

E.   Negative  Covenants.  Any Contran  Company  breaches any negative  covenant
     contained in the Loan Documents;

F.   Debt  Default.  Any Contran  Company  breaches  or is in default  under any
     agreement, instrument, or similar contractual undertaking for the repayment
     of funded debt in excess of  $5,000,000  or does not pay any trade  account
     payables  which is material or essential to its business,  other than those
     where the  amount  or  validity  is being  contested  in good  faith and by
     appropriate means, in the ordinary course of business;

G.   Guaranty. Any Contran Company repudiates,  breaches, or is in default under
     the Guaranty or the Security Documents;

H.   Insolvency.  Any  Contran  Company  becomes  insolvent,  the subject of any
     voluntary  insolvency  proceeding  or,  having  become  the  subject  of an
     involuntary insolvency proceeding, fails to have the involuntary proceeding
     dismissed within 90 days of commencement;

I.   Judgments.  Any  Contran  Company  becomes a judgment  debtor for more than
     $5,000,000 if such liability is not either covered by insurance or vacated,
     discharged,  stayed,  or bonded in connection with an appeal within 30 days
     of entry of the judgment; or

J.   Change in Control.  Any person or group of persons,  other than the current
     holders,  hereafter directly or indirectly  acquires control of any Contran
     Company and such change in control continues for 60 days.

VII.     REMEDIES.

A.   Suspending  Commitment.  The  members of the Bank Group may  suspend  their
     obligations   to  make  Advances  to  Contran  upon  the  occurrence  of  a
     Prospective Default or when the LTV is more than 40%.

B.   Canceling  Commitments.  The  members of the Bank  Group may  cancel  their
     obligations to makes Advances to Contran and accelerate the due date of the
     Notes (make payment of all principal,  interest, fees and costs immediately
     due and payable) without further notice or demand upon the occurrence of an
     Event of Default and Contran's failure to cure such Event of Default within
     applicable notice and grace periods.

C.   Collecting  Payments;  Order of  Exercise of  Remedies.  The Bank Group may
     collect the overdue  payments  or the  accelerated  balance of the Notes at
     such  times and in such  order as the Bank  Group  selects.  All rights and
     remedies provided by law, equity and contract are cumulative.

D.   Consent to Jurisdiction.  Each Contran Company consents to the jurisdiction
     and venue of the circuit court of the state of Oregon for Multnomah  County
     (Portland)  and of any federal court located in the state of Oregon for any
     proceeding arising out of the Loan Documents,  including offsets, defenses,
     and counterclaims arising in contract or tort.

E.   Offset.  Without  limiting the  generality of the  foregoing,  each Contran
     Company  expressly  grants to each  member  of the Bank  Group the right to
     offset the obligations of the Bank Group to the Contran  Companies  against
     the   Obligations   without  notice  or  demand  upon  the  occurrence  and
     continuance of an Event of Default.

F.   Jury  Trial  Waiver.  On advice of  counsel  and in lieu of an  arbitration
     clause normally required by the agent, each Contran Company waives trial by
     jury  in  any  controversy  (claim,  offset,  defense,   counterclaim,   or
     third-party  claim whether asserted in tort or contract)  arising out of or
     in any way related to construction,  performance, and/or enforcement of the
     Loan Documents.

G.   Costs.  The prevailing  party in the trial or appeal of any civil action or
     other  proceeding  relating  to the Loan  Documents  (including  claims and
     adversary  proceedings  in the  Bankruptcy  Court)  will be entitled to the
     award of a reasonable  attorney fee in addition to costs and disbursements.
     If  the  Bank  Group  uses  an  attorney  to  enforce  performance  of  the
     Obligations,  the Contran  Companies will reimburse the Bank Group for such
     costs reasonably  incurred on demand whether or not a civil action or other
     proceeding is commenced.

VIII.    INDEMNITY.

A.   Indemnity. The Contran Companies promise and agree to indemnify, defend and
     hold harmless each member of the Bank Group from and against all claims and
     causes of action (and any direct and reasonable  loss,  damage,  liability,
     cost,  and expense,  including  penalties,  damages,  liens and  reasonable
     attorney fees and other defense costs  resulting  therefrom) of any kind or
     nature  whatsoever that may be imposed on, incurred by, or asserted against
     any of such member in connection  with any  investigation,  litigation,  or
     other proceeding,  that arises from or relates to the Loan Documents or the
     failure of any of the Contran Companies to perform the Obligations, but the
     Contran  Companies  will  not  be  responsible  for  any  portion  of  such
     indemnified  claims or causes of action  that  arise  from or relate to the
     negligence  or  willful  misconduct  of any member of the Bank  Group,  any
     controversies or claims among the members of the Bank Group, or the failure
     of a member of the Bank Group to comply with any  statute,  regulation,  or
     order applicable to such indemnified party.

B.   Durable Nature.  This indemnity will survive the  satisfaction or discharge
     of the Advances by payment, bankruptcy discharge, or otherwise.

IX.      AGENCY PROVISIONS.

A.   Authorization and Action.  Each member of the Bank Group hereby irrevocably
     appoints  the Agent as its agent for  administration  of the  Advances  and
     Obligations  and authorizes the Agent to take such action and exercise such
     powers under this  Agreement  as are granted to the Bank Group,  subject to
     the  voting/approval  provisions  of this  Article,  by the  terms  of this
     Agreement   together  with  such  additional  actions  and  powers  as  are
     reasonably  incidental thereto. The obligations of the Agent are mechanical
     and  administrative in nature.  Accordingly,  the Agent is not by reason of
     its role under this  Agreement a trustee or fiduciary for any member of the
     Bank  Group.  The Agent will have no  obligations  except  those  expressly
     stated in this Agreement.  As to any matters not expressly  provided for in
     this Agreement (including, but not limited to, enforcement or collection of
     the Notes),  the Agent will not be required to exercise any  discretion  or
     take any action, but will be required to act or to refrain from acting upon
     the instructions of the Bank Group Majority,  and such instructions will be
     binding on all members of the Bank Group; provided, however, that the Agent
     will not be required to take any action which exposes the Agent to personal
     liability  or that  is  contrary  to this  Agreement  or  applicable  laws,
     regulations, or orders.

B.   Liability of the Agent. The Agent (including its  shareholders,  directors,
     officers, agents, and employees) will not be liable for any action taken or
     inaction by it under or in connection with this Agreement in the absence of
     its own gross  negligence or willful  misconduct.  Without thereby limiting
     the foregoing sentence, the Agent:

     1.   May treat the payee of a Note as the  holder  thereof  until the Agent
          receives  written notice of a transfer thereof signed by such payee in
          a form reasonably satisfactory to the Agent;

     2.   May consult with legal counsel,  independent public  accountants,  and
          other  experts  selected  by it and will not be liable  for any action
          taken or inaction by it in good faith in accordance with the advice of
          such counsel, accountants, or experts;

     3.   Makes no warranty or representation to any Bank and will not be liable
          or responsible for the statements, warranties, or representations made
          by the Contran  Companies or any other person in connection  with this
          Agreement,

     4.   Will not have any  obligation  to  inquire  as to the  performance  or
          observance  of any of the  terms,  covenants,  or  conditions  of this
          Agreement on the part of the Contran  Companies or any other person or
          to  inspect  any  Pledged  Securities,  books  and  records,  or other
          property of the Contran Companies or any other person;

     5.   Will not be  responsible  to any  member of the Bank Group for the due
          execution,    legality,   validity,    enforceability,    genuineness,
          perfection, sufficiency, or value of this Agreement, the Notes, or any
          other certificate,  instrument, or document furnished pursuant to this
          Agreement, and

     6.   Will have no  liability  under this  Agreement  or otherwise by acting
          upon any notice, consent, certificate, or other instrument,  document,
          or  other  writing  (whether  personally  delivered  or sent by  mail,
          messenger,  telegram, telex, or facsimile) believed by the Agent to be
          genuine and signed by the proper person.

C.   Rights  of  Agent  as a  Member  of the Bank  Group.  With  respect  to its
     individual  commitment,  the Advances made by it, and the Note and Guaranty
     issued to it, the Agent will have the same rights,  powers, and obligations
     under this Agreement as any other member of the Bank Group and may exercise
     and  perform  the same as though it were not also the Agent.  The Agent and
     its affiliates may accept deposits from, lend money to, act as trustee for,
     and generally  engage in any business with or own securities of the Contran
     Companies as if the Agent were not the Agent for the Bank Group and without
     any obligation to account therefor to the Bank Group.

D.   Independent  Credit  Decision.  Each member of the Bank Group  acknowledges
     that it has made its own credit  analysis  and decision  before  making its
     commitment on the basis of such  documents and  information  that it deemed
     appropriate  and  without  reliance  on  any  information,   analysis,   or
     recommendation  made by the  Agent.  Each  member  of the Bank  Group  also
     acknowledges that it will continue to make such independent credit analyses
     and decisions in taking or not taking action under this  Agreement.  Except
     for the notices,  reports,  and other  documents and  information  that the
     Agent is specifically  required to furnish to the members of the Bank Group
     under this  Agreement,  the Agent will have no obligation to provide to the
     members  of the  Bank  Group  any  additional  information  concerning  the
     financial  condition,  business  operations,  or  property  of the  Contran
     Companies that may come into the possession of the Agent or its affiliates.

E.   Indemnification. Each member of the Bank Group agrees to indemnify and hold
     harmless the Agent from and against such  member's  Percentage  Interest of
     all claims and causes of action (and any resulting loss, damage, liability,
     cost,  and expense,  including  penalties,  damages,  liens and  reasonable
     attorney  fees and other  defense  costs) of any kind or nature  whatsoever
     that (i) may be imposed on,  incurred by, or asserted  against the Agent in
     any way relating to or arising from this Agreement, (ii) are not reimbursed
     to the Agent by the Contran Companies,  and (iii) are not the result of the
     Agent's  gross  negligence  or willful  misconduct.  Without  limiting  the
     generality  of the  foregoing,  each  member  of the Bank  Group  agrees to
     reimburse  the  Agent  for  its  Percentage   Interest  of  any  reasonable
     out-of-pocket expenses, including reasonable attorney fees, incurred by the
     Agent in connection with the preparation,  administration,  enforcement, or
     legal advice with respect to rights or duties under,  the Loan Documents to
     the extent that such expenses are not reimbursed by the Contran Companies.

F.   Successor  Agent.  The Agent  may  resign at any time by giving at least 60
     days' prior written notice to the Bank Group and to the Contran  Companies.
     Upon  resignation,  the Bank Group Majority will appoint a successor Agent.
     If no successor  Agent has been  appointed  and  accepted  its  appointment
     within 30 days of receipt of the notice of resignation  of the Agent,  then
     the Agent may appoint its  successor  which shall be a national bank having
     combined  capital and surplus of at least $100 million.  Upon acceptance by
     the successor of its appointment, such successor will succeed to and become
     vested with all of the rights, powers,  privileges, and duties of the Agent
     and the retiring or removed Agent will be discharged  from its  obligations
     as the Agent under this Agreement.

G.   Sharing of Payments and Recoveries. If any member of the Bank Group obtains
     any  payment  (whether  voluntary,   involuntary,  by  way  of  offset,  or
     otherwise)  on account of the Note held by it and such payment is in excess
     of its  Percentage  Interest,  such  member  will  purchase  from the other
     members of the Bank Group such  participation  in the Notes held by them as
     is necessary to cause such purchasing member of the Bank Group to share the
     excess  payment  ratably with the other members of the Bank Group.  If such
     member  is  thereafter  required  to return  all or any part of the  excess
     payment,  then the  purchase  of  participation  by such member of the Bank
     Group will be rescinded  to the same extent and the purchase  price of such
     participation (or so much thereof as is recovered) will be refunded.

H.   Modifications,  Consents, and Waivers.  Except as allowed or limited by the
     remainder  of  this  section,  the  Bank  Group  Majority  may in  specific
     instances modify the terms and conditions of this Agreement, grant consents
     requested  by the  Contran  Companies,  waive  compliance  by  the  Contran
     Companies  with the terms and  conditions  of this  Agreement  but any such
     modifications, consent, or waiver must be in writing to be effective.

     Notwithstanding  any other term or  conditions  of the Loan  Documents,  no
     modification,  consent,  or waiver may, unless such modification,  consent,
     waiver,  release, or termination is in writing and is signed by all members
     of the Bank Group:

     1.   Waive any of the conditions precedent specified in Article III of this
          Agreement;

     2.   Increase or decrease the  individual  commitment  of any member of the
          Bank Group,  or otherwise  subject any member of the Bank Group to any
          additional obligations without such bank's consent

     3.   Reduce the amount payable on any Note (including principal,  interest,
          or fees);

     4.   Extend the Expiry Date;

     5.   Change the definition of "Bank Group Majority" or modify this section;
          or

     6.   Authorize the release or  termination  of any Guaranty or the security
          interest  of the Bank Group in any  material or  essential  part of or
          interest in the Pledged Securities.

          Notwithstanding  the foregoing,  the Bank Group Majority will have the
          right to authorize the Agent to release  parts of and/or  interests in
          Pledged Securities from time to time to accommodate ordinary course of
          business  transactions  by the  Contran  Companies  and the  Agent may
          release  additional  pledged securities as provided in II.B.10 of this
          Agreement as long as the LTV is maintained at or below 40%.

X.       MISCELLANEOUS.

A.   Binding Successors. The Loan Documents will bind the successors and assigns
     of the  Contran  Companies  and will bind and inure to the  benefit  of the
     successors and assigns of each member of the Bank Group and the Agent.

B.   Participants and Assignees.  Each member of the Bank Group will be entitled
     to sell no more than 75%  participation  in its percentage  interest in the
     Loan  Documents  (including  the  Advances  made  thereunder)  and  will be
     entitled  to propose to the Contran  Companies  partial  assignment  of its
     rights  and  delegation  of  its  duties  to no  more  than  two  financial
     institutions.  While the Contran  Companies will have the right prior to an
     Event of Default or Prospective  Default to consent to any such  assignment
     and delegation, each Contran Company covenants that its consent will not be
     unreasonably  withheld. Any such sale or assignment shall be subject to the
     condition that the Bank Group member pay Agent an administrative fee in the
     amount of $2,000 per participant or assignee.

     Upon the sale of a participation or a partial  assignment,  the participant
     or  assignee  shall be  entitled  to  receive  directly  from  the  Contran
     Companies  copies  of all  reports,  certificates  and  other  information,
     including  the  financial  statements,  as and  when  such  information  is
     provided to the member of the Bank Group  participating  or assigning  such
     interest.

C.   Non-Waiver.  No term or  condition  of the Loan  Documents  shall be deemed
     waived nor shall the grounds for the claim of estoppel be  established by a
     course of performance, oral understanding or other circumstances. Terms and
     conditions  may be waived or amended  only in writing  executed by the Bank
     Group or, in appropriate circumstances, the Bank Group Majority.

D.   Communications.  Whenever any communication is required by the terms of the
     Loan  Documents  or by law,  it will be  deemed  delivered  when  delivered
     personally or by facsimile  machine or on the third Banking Day after it is
     mailed in a postage prepaid envelope addressed to the intended recipient at
     the address  specified below or such other address as a party may hereafter
     specify by written notice to the other parties.

E.   Costs. The Contran Companies will pay on demand all reasonable direct costs
     and expenses,  including reasonable attorney fees, incurred by the Agent in
     drafting, negotiating, modifying and reviewing the Loan Documents.

F.   Counterparts.  The  Loan  Documents  may  be  executed  in  any  number  of
     counterparts,  each of which shall be deemed to be an original,  and all of
     which, taken together shall constitute one and the same contract.

G.   Statutory  Statement.  Under  Oregon Law,  most  agreements,  promises  and
     commitments  made  by  a  financial  institution  after  October  3,  1989,
     concerning Advances and other credit extensions which are not for personal,
     family or household purposes or secured solely by the borrower's  residence
     must be in writing,  express  consideration  and be signed by the financial
     institution to be enforceable.

U.S. BANK NATIONAL ASSOCIATION                  CONTRAN CORPORATION
  for itself and as the Agent for
  the Bank Group

By:  /s/ Janice T. Thede                        By:  /s/ Bobby D. O'Brien
     -------------------------------                 --------------------------
     Janice T. Thede                                 Bobby D. O'Brien
     Vice President                                  Vice President


                                                 NATIONAL CITY LINES, INC.


                                                 By: /s/ Bobby D. O'Brien
                                                     --------------------------
                                                     Bobby D. O'Brien
                                                     Vice President

U.S. BANK NATIONAL ASSOCIATION              Commitment Amount       $25,000,000


By:  /s/ Janice T. Thede
     ------------------------------------
     Janice T. Thede
     Vice President



$25,000,000                                                   September 3, 1998

                                      NOTE

For value and pursuant to a loan agreement of even date (the "Loan  Agreement"),
CONTRAN CORPORATION, a Delaware corporation ("Contran"),  promises and agrees to
pay  to the  order  or  assigns  of the  Bank  Group,  c/o  U.S.  BANK  NATIONAL
ASSOCIATION (the "Agent"),  National  Corporate  Banking,  555 S.W. Oak Street,
Portland, Oregon 97204 (or at such other address as the Bank Group may hereafter
specify in writing from time to time), the principal sum of $25,000,000, or such
lesser  amount as Contran  actually  borrows  from the Bank Group under the Loan
Agreement and this Note, plus interest, fees, and costs, as provided for in this
Note. All terms,  which are not specifically  defined in the Note, will have the
meanings given to them in the Loan Agreement.

1.   Use of Proceeds.  Contran will use the money  borrowed  from the Bank Group
     under this Note only for the Allowed Uses.

2.   Availability.  As long as there is no event of  Prospective  Default and no
     uncured  Event of Default,  Contran  will have the right to borrow from the
     Bank Group until the Expiry Date up to the amount Available.

     Contran will have the right to borrow,  repay,  and  reborrow  from time to
     time under the Note subject only to  Availability  and LTV,  payment of the
     breakage  charge  in the  event  of  prepayment  of a  LIBOR  Advance,  and
     Contran's  ability under the Loan Agreement to unilaterally make additional
     reductions in the aggregate commitment of the Bank Group.

3.   Fees. Contran will pay the following fees to the Bank Group:

     a)   The Commitment Fee quarterly in arrears; and

     b)   If and when required by the Bank Group, a late payment fee equal to 5%
          of  the  amount  of  any  interest  or   principal   payment  or  cost
          reimbursement not paid within 5 days following the due date.

4.   Repayment of  Principal.  Contran will repay  without  notice or demand the
     entire outstanding principal balance of the Note on the Expiry Date.

5.   Prepayment;  Breakage  Charge.  Contran  will  have  the  right  to  prepay
     principal  at any time but will pay a breakage  charge on  prepayment  of a
     LIBOR Advance.  The breakage  charge will include a processing fee and will
     be  calculated  by the  Bank  Group  to  enable  it to  recover  reasonable
     redeployment  costs and loss of income for the  remainder  of the  Interest
     Period.  Contran will pay the breakage  charge  whether the  prepayment  is
     voluntary or is paid after the Agent has  accelerated  the due date of this
     Note.

6.   Interest.  Before an Event of Default,  interest  will accrue at either the
     Prime Rate or, if  properly  selected  by Contran as  provided  in the Loan
     Agreement,  on LIBOR  Advances  (which  must be in the  minimum  amount  of
     $1,000,000,  and in multiples of $500,000 in excess of the minimum  amount)
     at the LIBOR for the  Interest  Period  selected by  Contran.  The LIBOR is
     quoted by the Agent as of 8:30 a.m.  each Banking Day. Once  accepted,  the
     LIBOR will be applicable for the entire Interest Period.

     Contran  will pay  interest on LIBOR  Loans as of the end of each  Interest
     Period and, if the 6-month  Interest  Period is selected,  as of the end of
     the first 90 days in such 6-month  Interest Period and will pay interest on
     Prime Rate Loans monthly in arrears as of the end of each  calendar  month.
     The interest  payment will be due within five days  following  receipt from
     the Agent of the Note holder's billing for such interest.

     Interest will accrue at the Default Rate as of the  occurrence of any Event
     of Default and until such  Default is cured or the Note is paid in full and
     will be payable at such rate on a weekly  basis as of the last  Banking Day
     of each calendar week.

7.   Costs.  The prevailing  party in the trial or appeal of any civil action or
     insolvency   (liquidation,   reorganization   or  receivership)   claim  or
     proceeding on any claim (including  setoffs,  defenses,  counterclaims  and
     third-party  claims) whether  arising in tort or contract)  arising from or
     related to this Note or the Bank  Group's  commitment  will be  entitled to
     reasonable attorney fees in addition to its costs and disbursements.

8.   Waivers.  Contran  waives  acceptance,  presentment,  dishonor,  notice  of
     dishonor,  and defenses and claims in  recoupment  and based on  suretyship
     (such as  extensions,  modifications,  and  impairment of recourse  rights)
     and/or impairment of Collateral.

9.   Default; Remedies. Contran will be in default under this Note if:

     a)   Contran  fails to make any  payment of  principal  when due under this
          Note or fails to make any payment of  interest,  fees or costs  within
          three Banking Days following the due date under this Note; or

     b)   Contran is otherwise in default under the Loan Agreement.

     Upon the occurrence of an Event of Default and with the consent of the Bank
     Group Majority, the Agent will have the right to accelerate the due date of
     this Note and/or to exercise all other rights and remedies specified in the
     Loan Documents or otherwise available at law.

10.  Governing Law. The  substantive  provisions of Oregon law (that is, without
     regard for any choice of law provisions which would make the law of another
     jurisdiction  applicable)  will govern the  construction and enforcement of
     this Note.

11.  Jury  Trial  Waiver.  On advice of  counsel  and in lieu of an  arbitration
     clause normally required by the agent, each Contran Company waives trial by
     jury  in  any  controversy  (claim,  offset,  defense,   counterclaim,   or
     third-party  claim whether asserted in tort or contract)  arising out of or
     in any way related to construction, performance, and/or enforcement of this
     instrument.

12.  Successors and Assigns. This Note will bind and inure to the benefit of the
     respective  successors and assigns of Contran,  the Contran Companies,  the
     Agent,  and the Bank Group (including its  participants),  but Contran will
     not have the right by  reason of this  paragraph  to assign  its  rights or
     delegate its Obligations under the Note or the other Loan Documents without
     the Bank Group's prior written consent.

13.  Guaranty/Security.  Payment of this Note and performance of the Obligations
     are:

     a)   Unconditionally guaranteed by the Contran Companies; and

     b)   Secured  by  first   priority   security   interests  in  the  Pledged
          Securities.

14.  Statutory  Warning.  Under  Oregon  law,  most  agreements,   promises  and
     commitments  made  by  a  financial  institution  after  October  3,  1989,
     concerning  loans and other credit  extensions  which are not for personal,
     family or household purposes or secured solely by the borrower's  residence
     must be in writing,  express  consideration  and be signed by the financial
     institution to be enforceable.

                                                 CONTRAN CORPORATION


                                                 By: /s/ Bobby D. O'Brien
                                                     -----------------------
                                                     Bobby D. O'Brien
                                                     Vice President

                                                 Three Lincoln Centre
                                                 5430 LBJ Freeway, Suite 1700
                                                 Dallas, Texas 75240-2697


                                                               September 3, 1998
                                PAYMENT GUARANTY

For value and pursuant to a loan  agreement of even date (the "Loan  Agreement")
among Contran Corporation,  a Delaware corporation ("Contran"),  the undersigned
corporation (the "Affiliate"),  U.S. Bank National Association,  a national bank
("U.S.  Bank"), and certain other banks and financial  institutions  referred to
therein as the "Bank  Group,"  the  Affiliate  unconditionally  guarantees  that
Contran and the Affiliate  will promptly pay and perform the  Obligations  under
the Loan Documents.  All of the capitalized  terms which are not defined in this
guaranty  (this  "Guaranty")  will have the meanings in this  Guaranty  that are
given to such terms in the Loan Agreement.

1.   Consideration.  The  Affiliate  acknowledges  that the  members of the Bank
     Group are willing to make Advances only on the condition that the Affiliate
     executes this  Guaranty and thereby  promises and agrees to pay and perform
     the  Obligations as a direct and primary  obligation of the Affiliate.  The
     Affiliate  and Contran are part of an  affiliated  group of companies  (the
     "Contran Companies") whose business operations are integrated and financial
     reporting  is  consolidated.  The  Affiliate  is fully  informed  as to the
     business  operations and financial affairs of Contran and the other members
     of the Contran Companies. The Affiliate acknowledges that the Affiliate has
     received and will receive benefit from the Advances.

2.   Waivers. The Affiliate hereby waives:

     2.1. Acceptance, presentment (including notice of dishonor), and demand;

     2.2. Claims  and   defenses  of   subrogation,   contribution,   indemnity,
          exoneration, recourse, reimbursement, and substitution against Contran
          and its property to the full extent  necessary to prevent any payments
          or other  transfers from Contran to the Bank Group from being made for
          the benefit of an "insider" in  determining  whether such  payments or
          other transfers  constitute  avoidable  transfers or preferences under
          section 547 of the Bankruptcy Code;

     2.3. Claims and defenses  that would  require the Bank Group to (i) proceed
          first against Contran or the Pledged  Securities before the Bank Group
          can proceed  against the Affiliate,  (ii) provide to the Affiliate any
          information  in the  possession  or  control  of the Bank Group or the
          Agent relating to the status of the  relationship  between Contran and
          the Bank  Group,  the  financial  condition  of  Contran,  the nature,
          status,  location or estimated value of the Pledged  Securities or any
          action,  inaction, or forbearance by the Bank Group against Contran or
          the Pledged Securities;

     2.4. Claims and defenses  based on  recoupment  or any other  disability or
          defense of Contran  other than  repayment  of the Loan and  failure of
          consideration,  including  claims  such as duress,  lack of  capacity,
          illegality,  fraud,  statute of limitations,  accord and satisfaction,
          impairment  of  recourse,  discharge  of  Contran  through  insolvency
          proceedings  or  otherwise,  the  manner,  order,  or  timing  of  any
          foreclosure  or  disposition  rights,  election  of  remedies,  or the
          forbearance  by the Bank  Group  of or with  respect  to any  right or
          remedy  that the Bank Group may have  against  Contran or the  Pledged
          Securities; and

     2.5. Claims and defenses  based on suretyship,  including  extension of due
          dates,  material  modifications,  and impairment of rights of recourse
          and/or of Pledged Securities. /1/

3.   Consent.  Without thereby limiting the generality of the foregoing waivers,
     the Affiliate consents to forbearance, material modification,  extension of
     due dates,  compromise,  and discharge of the debts and obligations  hereby
     guaranteed, and to partial or full releases, impairment, and abandonment of
     any item or items of the  Pledged  Securities  without  prior  notice to or
     consent of the  Affiliate and in such order and for such  consideration  as
     the Bank Group may consider appropriate.

4.   Insolvency  Proceedings.  In the event that Contran  becomes the subject of
     any insolvency proceedings (bankruptcy,  receivership, etc.), the Affiliate
     authorizes  the Bank Group to make  Advances  (loans) and extend  credit to
     such person as the debtor or debtor in  possession  and  repayment  of such
     Advances and/or extensions of credit will be covered by this Guaranty. This
     Guaranty  specifically  includes  any  amount  that the Bank  Group  may be
     required  to  repay  on  account  of an  avoided  transfer  or  preference.
     Regardless  of the  payment  or  performance  of the debts and  obligations
     hereby  guaranteed,  the  liability of the Affiliate to the Bank Group will
     continue  until  10  days  after  the  expiration  of  the  longest  of any
     potentially  applicable federal or state statute of limitations relating to
     preferences and fraudulent transfers.

5.   Subordination  of Claims and Equity  Interests.  Effective  upon an uncured
     default by Contran under the Loan Documents and continuing only for so long
     as  such  default  continues  to  exist,  the  Affiliate  subordinates  the
     Affiliate's  claims  against  and  equity  security  interests  in  Contran
     (including the rights to payment, collection, or enforcement of any present
     or future debt or obligation of Contran to the Affiliate) so as to provide,
     to the  maximum  extent  practicable,  that the  debts and  obligations  of
     Contran to the Bank Group  will be paid and  performed  before any debts or
     obligations  of  Contran  to the  Affiliate  are paid or  performed  or any
     distribution  is made on account of the equity  securities  of Contran that
     are owned or held by the  Affiliate.  The  Affiliate  agrees that any money
     that the  Affiliate  might  receive on account of such debts,  obligations,
     equity  securities,  or  contribution  rights  will be deemed to be held in
     trust  by the  Affiliate  for the  benefit  of the Bank  Group  and will be
     delivered immediately to the Agent upon receipt.

- --------------------
/1/ If the  Affiliate's  liability  under this  Guaranty  might be  governed by
     California  law, then the Affiliate also waives all  suretyship  rights and
     defenses that are provided by any subrogation,  reimbursement,  election of
     remedies,  antideficiency, or other laws (statutory provisions and judicial
     decisions) of California, including, but not limited to, CCP sections 580a,
     580b, 580d, and 726.

6.   Representations  and Warranties.  The Affiliate  represents and warrants to
     the Bank Group that:

     6.1. This Guaranty, and any accompanying Security Documents are enforceable
          against the  Affiliate  in  accordance  with its terns  subject to the
          effect  of  insolvency  (including  bankruptcy,   reorganization,  and
          receivership), moratorium, and other similar laws affecting the rights
          and remedies of creditors  generally,  general  principles  of equity,
          whether  applied  by a court of law or  equity,  and  other  generally
          applicable rules of law; and

     6.2. Neither the  execution  of this  Guaranty  and  accompanying  Security
          Documents nor  performance by the Affiliate of the  Obligations (a) is
          prohibited by, or will result in a fine,  penalty, or similar sanction
          under,  any  applicable  statutory  law,   regulation,   or  court  or
          administrative  order,  (b)  will  violate  any  of  its  organization
          documents (articles,  bylaws, etc.), or (c) will breach, or constitute
          an  event of  default  under,  any  agreement,  instrument,  mortgage,
          indenture,  or other  contract to which the Affiliate is a party or by
          which it or its property is bound.

7.   Organization Documents.  The Affiliate will promptly provide the Bank Group
     with copies of its organization  documents and the resolutions  authorizing
     this Guaranty and any accompanying Security Documents.

8.   Costs.  The prevailing  party in the trial or appeal of any civil action or
     insolvency proceeding to construe or enforce this Guaranty and/or to defend
     any claims, offsets, defenses,  counterclaims,  and third-party claims that
     are asserted  under  contract,  tort,  or other common law theories will be
     entitled  to recover  reasonable  attorney  fees in  addition  to costs and
     disbursements and such fees, costs, and disbursements will bear interest at
     the default rate specified in the Note from the date when  reimbursement is
     requested in writing until the date when such reimbursement is made.

9.   Jury  Trial  Waiver.  On advice of  counsel  and in lieu of an  arbitration
     clause normally  required by the agent,  the Affiliate waives trial by jury
     in any controversy (claim, offset,  defense,  counterclaim,  or third-party
     claim  whether  asserted in tort or contract)  arising out of or in any way
     related to construction, performance, and/or enforcement of this document.

10.  Governing  Law.  This  Guaranty is governed by the  substantive  provisions
     (that is, without regard for the rules for conflict of laws) of Oregon law.

11.  Consent  to  Jurisdiction.   The  Affiliate   irrevocably  submits  to  the
     jurisdiction of any state and federal court sitting in Portland, Oregon, in
     any action or  proceeding  relating to this Guaranty and waives any and all
     claims that such forum is  inconvenient  or that there is a more convenient
     forum located elsewhere.

12.  Miscellaneous.

     12.1.The  Affiliate's  liability  and  obligations  under this Guaranty for
          performance of the Obligations are primary, are joint and several with
          Contran, and extend to each member of the Bank Group as well as to the
          Bank Group as a whole and to the Agent.

     12.2.This is an irrevocable,  continuing  guaranty and will remain in force
          until such time as all Obligations have been discharged in full.

     12.3.This  Guaranty  will bind and inure to the  benefit of the  Affiliate,
          the  Agent,  each  member  of the Bank  Group,  and  their  respective
          successors and assigns.

     12.4.In this  Guaranty,  single  pronouns are gender and number neutral and
          can refer to men, women,  entities,  and multiple  parties if and when
          the context so requires.

     12.5.A duplicate  counterpart  of this  Guaranty  will be executed for each
          Bank.  This Guaranty may be delivered by facsimile  signature.  If the
          Affiliate  delivers  this  Guaranty by  facsimile,  such delivery will
          constitute  the promise of that person to deliver the  manually-signed
          version of this Guaranty to the Agent as soon as reasonably possible.

     12.6.Statutory  Warning.  Under Oregon law, most  agreements,  promises and
          commitments made by a financial  institution  concerning  Advances and
          other  credit  extensions  which  are  not  for  personal,  family  or
          household  purposes  or  secured  solely by the  borrower's  principal
          residence must be in writing, express consideration and be teed by the
          financial institution to be enforceable.

                                                      NATIONAL CITY LINES, INC.


                                                      By: /s/ Bobby D. O'Brien
                                                          ----------------------
                                                          Bobby D. O'Brien
                                                          Vice President
                           SECURITIES PLEDGE AGREEMENT

This Securities Pledge Agreement dated as of September 3, 1998, is among Contran
Corporation,  a Delaware corporation  ("Contran"),  National City Lines, Inc., a
Delaware  corporation ("NCL"), and U.S. Bank National Association ("U.S. Bank"),
as agent for certain banks and financial institutions (the "Bank Group"), and is
executed pursuant to a loan agreement of even date (the "Loan Agreement").

                                    Recitals

                  A. The Bank Group is providing  loans and extensions of credit
("Advances") to Contran under the Loan Agreement. All capitalized words that are
not specifically  defined in this Securities Pledge Agreement are defined in the
Loan Agreement.

                  B. One of the conditions  precedent to the members of the Bank
Group making any Advances to Contran is that the Contran  Companies execute this
Securities  Pledge Agreement and perfect the security interest of the Bank Group
created by this  Securities  Pledge  Agreement  by  delivering  to the Agent the
certificates  representing  the Pledged  Securities (as defined below) and stock
powers executed in blank.

                  NOW, THEREFORE, for value, it is agreed that:

1.       Pledge.  The Contran  Companies hereby pledge,  assign,  transfer,  and
         grant a security interest to the Agent for the Bank Group in and to all
         of the following  investment  securities  (including any  certificates,
         voting rights, owner prerogatives,  dividends,  redemptions,  and other
         cash  and  non-cash  distributions,   and  other  entitlements  related
         thereto):

                  6,000,000 shares of Valhi, Inc., a Delaware corporation,

         all  profits,   products  and  other  proceeds  thereof  (the  "Pledged
         Securities"),  to  secure  performance  of  the  Obligations.   Without
         limiting the generality of the foregoing,  the Loan Agreement  requires
         the   pledge   of   additional   investment   securities   in   certain
         circumstances. When pledged, such additional investment securities will
         immediately  become part of the Pledged Securities and,  therefore,  be
         subject  to  the  terms  and  conditions  of  this  Securities   Pledge
         Agreement.

2.       Representations  and Warranties.  The Contran  Companies  represent and
         warrant to the Bank Group that:

         a)       NCL is and will  continue to be the sole legal and  beneficial
                  owner and holder of the Pledged Securities;

         b)       Neither the execution nor the  performance of this  Securities
                  Pledge Agreement violates any statutory law, regulation,  rule
                  or order  applicable to any Contran  Company or any agreement,
                  instrument,  or  indenture  to which any Contran  Company is a
                  party or by which such person's property is bound; and

         c)       The  Pledged  Securities  are  not  subject  to  any  security
                  interest,  lien,  or adverse  claim  other  than the  security
                  interest granted in this Securities Pledge Agreement.

3.       Perfection.   The  Contran   Companies   will   promptly   deliver  the
         certificates  representing the Pledged Securities to the Agent and will
         promptly issue any additional  documents,  such as stock powers, and to
         take any additional  action,  such as notification  to  intermediaries,
         that the Agent  reasonably  believes are  necessary or  appropriate  to
         perfect  the  security  interest  created  by  this  Securities  Pledge
         Agreement.

4.       Voting; Cash Proceeds. The Contran Companies will have the right before
         an Event of Default to:

         a)       Exercise   all  voting   rights   attendant   to  the  Pledged
                  Securities; and

         b)       Receive and use all distributions  (which includes any and all
                  dividends) made on account of the Pledged  Securities  without
                  accounting   to  the  Bank   Group  for  such   distributions.
                  Notwithstanding the foregoing, no Contran Company will, as the
                  owner of the  Pledged  Securities,  vote for or consent to any
                  merger,  share  exchange,  transfer  (sale,  lease,  exchange,
                  mortgage,  pledge,  dedication or other disposition) of assets
                  outside of the ordinary  course of business or other  business
                  combination  involving the issuer(s) of the Pledged Securities
                  or the dissolution of the issuer(s) of the Pledged  Securities
                  without the prior  written  consent of the Bank  Group,  which
                  will not be unreasonably withheld or delayed.

         Following an Event of Default,  the Bank Group will have the  exclusive
         right  to  vote  and  to   receive,   demand,   sue  for  and  use  all
         distributions,  proceeds,  or other  payments on account of the Pledged
         Securities.  In the event any Contran Company receives any distribution
         or  payment  after an Event of  Default,  such  person  will  hold such
         distribution  or  payment  as the agent for the Bank  Group in the form
         received  and will  comply  with the orders of the Agent  with  respect
         thereto.

5.       Custodial Matters. The Agent's only duty hereunder is to use reasonable
         care in the custody and preservation of the certificates.

6.       Default.   The  Contran  Companies  will  be  in  default  under  this
         Securities Pledge Agreement if:

         a)       An Event of Default occurs under the Loan Agreement;

         b)       Any  representation or warranty made in this Securities Pledge
                  Agreement is false or misleading in any material respect; or

         c)       The Contran  Companies breach any promise or agreement made in
                  this Securities Pledge Agreement.

7.       Remedies.  TIME IS OF THE ESSENCE.  Upon  Default,  the Agent will have
         right to dispose of the Pledged  Securities in one or more transactions
         in accordance with applicable federal and state securities laws and the
         Uniform Commercial Code. These rights are cumulative with the rights of
         the Bank  Group at law and  under the  other  agreements  that the Bank
         Group has with the Contran Companies.

         In the event the Agent is unable to dispose of the  Pledged  Securities
         by public  sale  because  of  limitations  imposed  by federal or state
         securities laws (or is unwilling to invest the time and money necessary
         to  register  the  Pledged  Securities  or  obtain  an  exemption  from
         registration  requirements),  and the Agent  desires  to dispose of the
         Pledged  Securities  by private  sale(s),  then the Agent will give the
         Contran Companies and the issuers of the Pledged Securities at least 10
         days'  prior  written  notice of the  Agent's  intention  to  conduct a
         private sale and may at any time  thereafter  conduct a private sale or
         sales of all or  portions  of the Pledged  Securities  without  further
         notice to the Contran Companies.

8.       Costs and Expenses.

         a)       Each Contran  Company  promises  and agrees to  reimburse  the
                  Agent  for all  advances  made by the  Agent  to  protect  and
                  preserve the Pledged  Securities and for all reasonable  costs
                  and  expenses  incurred by the Agent  (including  attorney and
                  brokerage fees) in exercising its rights and remedies  against
                  the Pledged Securities, and to pay interest on such amounts at
                  the Default Rate from the date reimbursement is demanded until
                  the amount is paid in immediately available funds.

         b)       The  prevailing  party in the  trial or  appeal  of any  civil
                  action or insolvency proceeding to collect on or construe this
                  Securities Pledge Agreement will be entitled to the award of a
                  reasonable   attorney   fee  in  addition  to  its  costs  and
                  disbursements.  If the  Agent  uses an  attorney  to assist in
                  enforcement of this Securities Pledge  Agreement,  the Contran
                  Companies  will reimburse the Agent on demand for that expense
                  even if no action or proceeding is commenced.

9.       Jurisdiction.   The  Contran  Companies   irrevocably   submit  to  the
         jurisdiction of any state or federal court sitting in Portland, Oregon,
         in  any  action  or  proceeding  relating  to  this  Securities  Pledge
         Agreement and waive any and all claims that such forum is  inconvenient
         or that there is a more convenient forum located elsewhere.

10.      Waiver  of  Jury  Trial.  On  advice  of  counsel  and  in  lieu  of an
         arbitration clause normally required by the Agent, each Contran Company
         hereby waives trial by jury in any controversy (claim, defense, offset,
         counterclaim,   or  third-party  claim  whether  asserted  in  tort  or
         contract)  arising  out  of or in  any  way  related  to  construction,
         performance, and/or enforcement of this Securities Pledge Agreement.

11.      Miscellaneous.

         a)       This Securities  Pledge Agreement will bind the successors and
                  assigns of the Contran Companies and will inure to the benefit
                  of the  participants,  successors,  and  assigns of the Agent,
                  each member of the Bank Group and the Bank Group as a whole.

         b)       The substantive (but not conflicts) law of the state of Oregon
                  will govern  construction  and  enforcement of this Securities
                  Pledge Agreement.

         c)       No provision of this Securities  Pledge  Agreement can or will
                  be waived or  modified  by  conduct or oral  agreement  either
                  before or after this Securities Pledge Agreement is executed.

U.S. BANK NATIONAL ASSOCIATION                        CONTRAN CORPORATION
for itself and as the Agent for
the Bank Group

By:  /s/ Janice T. Thede                              By: /s/ Bobby D. O'Brien
     ------------------                                   ----------------------
     Janice T. Thede                                      Bobby D. O'Brien
     Vice President                                       Vice President



                                                       NATIONAL CITY LINES, INC.


                                                      By: /s/ Bobby D. O'Brien
                                                          ----------------------
                                                          Bobby D. O'Brien
                                                          Vice President
                              EXTENSION AGREEMENT

     This Extension  Agreement  ("Agreement") is entered into as of September 2,
1999, among Contran Corporation,  a Delaware corporation  ("Contran"),  National
City  Lines,  Inc.,  a Delaware  corporation  ("NCL"),  and U.S.  Bank  National
Association ("U.S. Bank").


                                    RECITALS

     A. Contran, NCL (collectively,  the "Contran Companies"), and U.S. Bank are
parties  to a loan  agreement  dated as of  September  3, 1998 (the  "1998  Loan
Agreement"),  and certain  related note,  guaranty,  and pledge  agreements (the
"1998 Loan Documents").

     B.  Capitalized  terms used in this  Agreement  that are not defined herein
have the meaning assigned to those terms in the 1998 Loan Agreement.

     C. The parties  desire to extend the Expiry Date of the 1998 Loan Documents
for an additional 364 days (to August 31, 2000).

     NOW, THEREFORE, for valuable consideration,  the receipt and sufficiency of
which is hereby  acknowledged,  the  Contran  Companies  and U.S.  Bank agree as
follows:

                                    AGREEMENT

     1. Each Contran  Company  represents and warrants to U.S. Bank that: (a) it
is in good  standing  under the laws of the state of its  formation,  (b) it has
been authorized to execute and perform its obligations  under this Agreement and
the 1998 Loan  Documents  (as modified by this  Agreement),  (c) the  individual
executing  this  Agreement on its behalf has been duly  authorized  to take such
action,  (d)  the  1998  Loan  Documents  (as  amended  by this  Agreement)  are
enforceable  against it in accordance with their respective terms,  subject only
to the effect of  insolvency  and other  similar laws  affecting  the rights and
remedies of creditors generally, general principles of equity whether applied by
a court of law or equity, and general applicable rules of law, (e) all financial
information  previously  provided to U.S.  Bank  presents  fairly its  financial
position  as of the date of such  financial  information  and the results of its
operations and changes in financial position for the period in question, (f) the
representations  and  warranties  made to U.S.  Bank in the 1998 Loan  Documents
continue to be true and correct in all  material  respects,  and (g) the Contran
Companies  are not in  default  in any  material  respect  under  the 1998  Loan
Documents as of the date of this Agreement.

     2. U.S. Bank hereby  extends the Expiry Date,  and therefore its commitment
to make  Advances to the Contran  Companies on the terms and  conditions  of the
1998 Loan Documents, to August 31, 2000.

     3. This  Agreement  will  become  effective  only when each of the  Contran
Companies and U.S. Bank has signed it and has sent a copy of the signed document
to the other parties to this Agreement  (which may be  accomplished by facsimile
transmission).  Each  party  to this  Agreement  will  deliver  manually  signed
counterparts of this Agreement to the other.

     4. Except as specified in paragraph 2 of this  Agreement,  all of the terms
and conditions of the 1998 Loan Agreement and the 1998 Loan Documents  remain in
full force and effect.

     STATUTORY  NOTICE:  Under  Oregon  law,  most  agreements,   promises,  and
commitments  made by Lender after  October 3, 1989,  concerning  loans and other
credit extensions which are not for personal,  family, or household  purposes or
secured  solely  by  the  Borrower's  residence  must  be  in  writing,  express
consideration, and be signed by Lender to be enforceable.

U.S. BANK NATIONAL ASSOCIATION              CONTRAN CORPORATION

By: /s/ Janice T. Thede                      By: /s/ Bobby D. O'Brien
   -------------------------------              --------------------------------
   Janice T. Thede                              Bobby D. O'Brien
   Vice President                               Vice President and Treasurer

                                            NATIONAL CITY LINES, INC.

                                            By: /s/ Bobby D. O'Brien
                                                --------------------------------
                                                Bobby D. O'Brien
                                                Vice President and Treasurer
                              AMENDED AND RESTATED
                   CONTRAN DEFERRED COMPENSATION TRUST NO. 2


         This Amended and Restated  Agreement is made this 11th day of February,
1999 by and between Contran Corporation,  a Delaware corporation ("Company") and
Boston  Safe  Deposit  and  Trust  Company,   a  Massachusetts   business  trust
("Trustee");

         WHEREAS,  Company and  NationsBank  of Texas,  N.A. ("Former  Trustee")
have  previously  entered into the Contran  Deferred Compensation Trust No. 2
dated October 1, 1995 (hereinafter called "Trust");

         WHEREAS, NationsBank of Texas, N.A. requested to be removed as Trustee
of the Trust effective January 2, 1998;

         WHEREAS, Boston Safe Deposit and Trust Company accepted the appointment
as trustee of the Trust effective January 2, 1998;

         WHEREAS,  the  Company  and  Trustee  amended  and  restated  the Trust
effective  January 2, 1998 as the  Contran  Deferred  Compensation  Trust No. 2,
Amended and Restated;

         WHEREAS, the restated Trust was amended first on July 16, 1998;

         WHEREAS,  the Company and Trustee  desire to further  amend and restate
the Trust as of January 1, 1999 as the Amended  and  Restated  Contran  Deferred
Compensation Trust No. 2;

         WHEREAS,  Company has adopted the  nonqualified  deferred  compensation
Plan(s) as listed in Appendix A (the "Plans");

         WHEREAS,  Company has incurred or expects to incur  liability under the
terms of such  Plan(s)  with respect to the  individuals  participating  in such
Plan(s);

         WHEREAS,  Company has  established  a Trust and wishes to contribute to
the Trust assets that shall be held therein,  subject to the claims of Company's
creditors in the event of Company's Insolvency, as herein defined, until paid to
Plan  participants  and their  beneficiaries in such manner and at such times as
specified in the Plan(s);

         WHEREAS,  it is the  intention  of the  parties  that this Trust  shall
constitute  an  unfunded  arrangement  and shall not  affect  the  status of the
Plan(s) as an unfunded  plan  maintained  for the purpose of providing  deferred
compensation  for a select group of management or highly  compensated  employees
for purposes of Title I of the Employee Retirement Income Security Act of 1974;

         WHEREAS,  it is the intention of Company to make  contributions  to the
Trust to provide  itself  with a source of funds to assist it in the  meeting of
its liabilities under the Plan(s); and

         WHEREAS, for purposes of this Trust Agreement, the term "subsidiary" of
Company  shall  mean an  entity  that  is  controlled  by  Company  directly  or
indirectly through one or more intermediaries;

         NOW,  THEREFORE,  the parties do hereby  establish  the Trust and agree
that the Trust shall be comprised, held and disposed of as follows:

         Section 1.        Establishment of Trust.

         (a) Company deposited with Former Trustee in trust:

                  (i)      260,458 shares of the common stock,  par value $0.01
         per share, of Valhi,  Inc., a Delaware  corporation and subsidiary of
         Company;

                  (ii)     97,065  shares of the  common  stock,  par  value
         $1.00 per  share,  of  Tremont  Corporation,  a  Delaware
         corporation and subsidiary of Company; and

                  (iii)    134, 720 shares of the common stock, par value $1.00
         per share, of Keystone Consolidated  Industries,  Inc.,
         a Delaware corporation and subsidiary of Company;

                  all of which  shares  became the  principal of the Trust to be
         held, administered and disposed of by Trustee as provided in this Trust
         Agreement.

         (b) The Trust hereby established shall be irrevocable.

         (c) The Trust is intended to be grantor trust,  of which Company is the
grantor,  within the  meaning of subpart  E, part I,  subchapter  J,  chapter 1,
subtitle  A of the  Internal  Revenue  Code of 1986,  as  amended,  and shall be
construed accordingly.

         (d) The principal of the Trust,  and any earnings thereon shall be held
separate and apart from other funds of Company and shall be used exclusively for
the uses and purposes of Plan  participants and general  creditors as herein set
forth. Plan participants and their  beneficiaries  shall have no preferred claim
on, or any beneficial  ownership interest in any assets of the Trust. Any rights
created  under the  Plan(s)  and this Trust  Agreement  shall be mere  unsecured
contractual rights of Plan participants and their beneficiaries against Company.
Any assets held by the Trust will be subject to the claims of Company's  general
creditors under federal and state law in the event of Insolvency,  as defined in
Section 3(a) herein.

         (e) Company,  in its sole discretion,  may at any time, or from time to
time, make  additional  deposits of cash or other property in trust with Trustee
to augment the principal to be held,  administered and disposed of by Trustee as
provided in this Trust  Agreement.  Neither Trustee nor any Plan  participant or
beneficiary  shall  have any  right to  compel  such  additional  deposits.  The
foregoing shall not modify any obligation of Company under the Plan(s).

         Section 2.    Payments to Plan Participants and Their Beneficiaries.

         (a)  Company   shall  deliver  to  Trustee  a  schedule  (the  "Payment
Schedule")   that  indicates  the  amounts  payable  in  respect  of  each  Plan
participant  (and his or her  beneficiaries),  that  provides a formula or other
instructions  acceptable to Trustee for determining the amounts so payable,  the
form in which such amount is to be paid (as provided for or available  under the
Plan(s)),  and the time of commencement  for payment of such amounts.  Except as
otherwise provided herein,  Trustee shall make payments to the Plan participants
and their  beneficiaries in accordance with such Payment  Schedule.  The Trustee
shall make provision for the reporting and withholding of any federal,  state or
local taxes as Company  shall  direct in writing to be withheld  with respect to
the payment of benefits  pursuant to the terms of the Plan(s) and shall promptly
pay to the Company in cash such  amounts  withheld.  The Company  shall pay such
amounts withheld to the appropriate taxing authorities.

         (b) The entitlement of a Plan  participant or his or her  beneficiaries
to benefits under the Plan(s) shall be determined by Company or such party as it
shall  designate  under the Plan(s),  and any claim for such  benefits  shall be
considered and reviewed under the procedures set out in the Plans(s).

         (c) Company may make payment of benefits  directly to Plan participants
or their  beneficiaries  as they  become  due under  the  terms of the  Plan(s).
Company  shall  notify  Trustee of its  decision  to make  payment  of  benefits
directly  prior  to the  time  amounts  are  payable  to  participants  or their
beneficiaries.  In addition,  if the  principal  of the Trust,  and any earnings
thereon,  are not sufficient to make payments of benefits in accordance with the
terms of the Plan(s),  Company shall make the balance of each such payment as it
falls due.  Trustee shall notify  Company  where  principal and earnings are not
sufficient  but shall not have a duty to require that  supplemental  payments be
made to Plan participants or supplemental contributions be made to the Trust.

         (d) Company  determination  of Payment  Schedules  and a  participant's
entitlement  to benefits  shall be made  annually by Company with respect to the
deferred  compensation  accrued each year and may not  thereafter be modified by
Company without the participant's consent. For purposes of this Section 2(d) all
Company  actions with respect to a  participant  prior to the time of his death,
disability,  retirement or  termination  shall be by the members of its Board of
Directors at such time,  and all Company  actions with respect to a  participant
following  his death,  disability,  retirement  or  termination  shall be by the
members of its Board of Directors  immediately prior to the participant's death,
disability, retirement or termination.

         (e) As soon as possible  after the  occurrence  of a Change of Control,
any  real  estate  held  in a real  estate  subtrust  of  this  Trust  shall  be
distributed to the Plan  participants or beneficiaries  for whom such assets are
held under such subtrust, and within one hundred and eighty (180) days following
such a Change of Control, the Trustee shall distribute any remaining benefits to
which a Plan  participant  or  beneficiary  is entitled by a lump sum payment in
cash.

         Section 3.        Trustee Responsibility Regarding Payments to Trust
Beneficiary When Company Is Insolvent.

         (a) Trustee  shall cease payment of benefits to Plan  participants  and
their  beneficiaries  if the Company is  insolvent.  Company shall be considered
"Insolvent" for purposes of this Trust Agreement if (i) Company is unable to pay
its debts as they become due, or (ii) Company is subject to a pending proceeding
as a debtor under the United States Bankruptcy Code.

         (b) At all times during the  continuance of this Trust,  as provided in
Section 1(d) hereof,  the  principal and income of the Trust shall be subject to
claims of general  creditors of Company under federal and state law as set forth
below.

                  (1) The Board of Directors and the Chief Executive  Officer of
Company  shall  have the duty to inform the  Trustee  in  writing  of  Company's
Insolvency.  If a person claiming to be a creditor of Company alleges in writing
to Trustee that Company has become  Insolvent,  Trustee shall determine  whether
Company is Insolvent and, pending such determination,  Trustee shall discontinue
payment of benefits to Plan participants or their  beneficiaries.  In all cases,
Trustee shall be entitled to conclusively rely upon the written certification of
the  continuing  Directors of the Company when  determining  whether  Company is
insolvent.

                  (2)  Unless   Trustee  has  actual   knowledge   of  Company's
Insolvency,  or has received  notice from  Company or a person  claiming to be a
creditor  alleging  that  Company is  Insolvent,  Trustee  shall have no duty to
inquire  whether  Company is  Insolvent.  Trustee may in all events rely on such
evidence  concerning  Company's solvency as may be furnished to Trustee and that
provides Trustee with a reasonable  basis for making a determination  concerning
Company's solvency.

                  (3) If at any time  Trustee  has  determined  that  Company is
Insolvent,  Trustee shall  discontinue  payments to Plan  participants  or their
beneficiaries  and  shall  hold the  assets  of the  Trust  for the  benefit  of
Company's  general  creditors.  Nothing in this Trust Agreement shall in any way
diminish any rights of Plan participants or their  beneficiaries to pursue their
rights as general  creditors  of Company  with respect to benefits due under the
Plan(s) or otherwise.

                  (4)  Trustee  shall  resume the  payment of  benefits  to Plan
participants or their  beneficiaries  in accordance with Section 2 of this Trust
Agreement only after Trustee has determined that Company is not Insolvent (or is
no longer Insolvent).

         (c) Provided that there are sufficient assets, if Trustee  discontinues
the  payment of  benefits  from the Trust  pursuant  to Section  3(b) hereof and
subsequently   resumes  such   payments,   the  first  payment   following  such
discontinuance  shall include the  aggregate  amount of all payments due to Plan
participants or their beneficiaries under the terms of the Plan(s) (as certified
by Company) for the period of such discontinuance,  less the aggregate amount of
any payments made to Plan participants or their beneficiaries by Company in lieu
of the payments provided for hereunder during any such period of discontinuance.

         Section 4.        Payments to Company.

         Except as provided in Sections  2(a), 3 or 5(c) hereof,  or as provided
in Section 7 of the Plan, after the Trust has become irrevocable,  Company shall
have no right or power to direct  Trustee  to return to  Company or to divert to
others any of the Trust assets  before all payment of benefits have been made to
Plan participants and their beneficiaries pursuant to the terms of the Plan(s).

         Section 5.        Investment Authority.

         (a)  Except as  limited by Section  5(b),  the  Trustee  shall have the
powers,  rights and  duties in  addition  to those  provided  elsewhere  in this
agreement  or by law to be  exercised  only  pursuant  to the  direction  of the
Company  or an  investment  manager  appointed  by the  Company:  to invest  and
reinvest  part  or all of the  trust  fund  in  any  real  property,  securities
(including stock or rights to acquire stock) or obligations issued by Company or
subsidiaries of the Company,  stocks, mutual fund shares (including  proprietary
funds of the Trustee or its affiliates),  partnership interests, venture capital
investments,  bonds,  debentures,  notes,  commercial paper, treasury bills, any
common, commingled or collective trust funds (including proprietary funds of the
Trustee or its affiliates),  or pooled investment funds, any deposit accounts or
funds maintained by a legal reserve life insurance company in accordance with an
agreement  between  the Trustee and such  insurance  company or a group  annuity
contract issued by such insurance company to the Trustee as contractholder,  any
interest-bearing  deposits  held by any bank or  similar  financial  institution
(including  Trustee or its affiliates ), and to diversify such investments so as
to  minimize  the risk of large  losses  unless  under the  circumstances  it is
clearly prudent no to do so. In no event shall the Trust invest directly in real
estate.  Trust  assets  shall be limited to  domestic  United  States  assets or
securities which may be held through the Depository Trust Company.

         (b) Trustee shall not have any  investment  discretion  with respect to
the  assets of the Trust and shall not sell or  otherwise  dispose of any assets
that are  deposited by the Company with the Trust unless it is directed to do so
by Company in writing.  All rights  associated with assets of the Trust shall be
exercised by Company or the person designated by Company,  and shall in no event
be exercisable by or rest with Plan participants.  Voting rights with respect to
Trust assets will be exercised by the Company.

         (c) Company  shall have the right at anytime,  and from time to time in
its sole  discretion,  to  substitute  assets of equal fair market value for any
asset held by the Trust.  This right is exercisable by Company in a nonfiduciary
capacity without the approval or consent of any person in a fiduciary capacity.

         (d) To settle,  compromise or submit to arbitration any claims, debt or
damages due or owing to or from the Trust;  to commence or defend suits or legal
proceedings to protect any interest of the Trust;  and to represent the Trust in
all  suits  or legal  proceedings  in any  court or  before  any  other  body or
tribunal;

         (e) To take all action  necessary to pay for  authorized  transactions,
including borrowing or raising monies from any lender, including Trustee, in its
corporate  capacity in conjunction with its duties under this Agreement and upon
such terms and  conditions  as Trustee  may deem  advisable  to settle  security
purchases  and/or  foreign  exchange  or  contracts  for foreign  exchange,  and
securing  the  repayments  thereof  by  pledging  all or any part of the  Trust.
Trustee  shall be  entitled  to  collect  from  the  Trust  sufficient  cash for
reimbursement,  and if such cash is  insufficient,  dispose of the assets of the
Trust to the extent necessary to obtain reimbursement.

         (f) To  appoint  with prior  written  approval  of Company  custodians,
subcustodians  or  subtrustees,  domestic or foreign  (including  affiliates  of
Trustee), as to part or all of the Trust; provided,  however, that Trustee shall
not be liable for the acts or omissions of any subcustodian appointed under this
Section 5.

         (g) To hold  property in nominee name, in bearer form, or in book entry
form, in a clearinghouse  corporation or in a depository (including an affiliate
of Trustee),  so long as Trustee's records clearly indicate that the assets held
are a  part  of  the  Trust;  provided,  however,  that  Trustee  shall  not  be
responsible  for any  losses  resulting  from  the  deposit  or  maintenance  of
securities or other property (in accordance  with market  practice,  custom,  or
regulation)  with  any  recognized   foreign  or  domestic  clearing   facility,
book-entry system,  centralized custodial  depository,  or similar organization;
and

         (h) To settle  indirect  investments in Real Estate (the "Real Estate")
and exercise such other powers as may be required in connection  with the Fund's
investments  in  Real  Estate.  The  Trustee  shall  have no  responsibility  or
discretion with respect to the ownership, management, administration,  operation
or control of any Real Estate. To the extent permitted by law, the Trustee shall
be  indemnified  by the  Company,  to the extent not paid by the Fund,  from all
claims,  liabilities,   losses,  damages  and  expenses,   including  reasonable
attorneys'  fees and  expenses,  arising from or in  connection  with any matter
relating  to any Real  Estate  held in the Trust and which give rise to: (i) any
violation of any applicable  environmental  or health or safety law,  ordinance,
regualtion or ruling; or (ii) the presence, use, generation,  storage,  release,
threatened  release,  or  containment,  treatment or disposal of any  petroleum,
including crude oil or any fraction thereof, hazardous substances, pollutants or
contaminants as defined in the Comprehensive Environmental Response Compensation
and  Liability  Act,  as  amended  (CERCLA)  or  hazardous,  toxic or  dangerous
substances  or materials as many of these terms may be defined under any federal
or state law in the broadest sense from time to time. This indemnification shall
survive the sale or other  disposition of any Real Estate investment of the Fund
or the termination of this Agreement.

         (i) Generally to do all acts, whether or not expressly authorized,
which the Trustee may deem necessary or desirable for the protection of the
Trust.

         Notwithstanding  anything  to the  contrary  contained  in  this  Trust
Agreement,  in the event of a Change in Control as defined in Section 14(d), the
Trustee shall have and exercise investment discretion with respect to all assets
of the Trust.

         Section 6.        Disposition of Income.

         During the term of this Trust, all income received by the Trust, net of
expenses and taxes, shall be accumulated and reinvested.

         Section 7.        Accounting by Trustee.

         Trustee  shall keep accurate and detailed  records of all  investments,
receipts,  disbursements,  and  all  other  transactions  required  to be  made,
including  such  specific  records as shall be agreed  upon in  writing  between
Company and Trustee.  Within 30 days  following  the close of each calendar year
and within 30 days after the removal or  resignation  of Trustee,  Trustee shall
deliver to Company a written account of its  administration  of the Trust during
such year or during the period from the close of the last  preceding year to the
date of such removal or resignation,  setting forth all  investments,  receipts,
disbursements and other transactions  effected by it, including a description of
all securities and investments  purchased and sold with the cost or net proceeds
of such  purchases or sales  (accrued  interest paid or  receivable  being shown
separately),  and showing all cash,  securities  and other  property held in the
Trust at the end of such year or as of the date of such removal or  resignation,
as the case may be.

         Section 8.        Responsibility of Trustee.

         (a) Trustee  shall act with the care,  skill,  prudence  and  diligence
under the  circumstances  then  prevailing  that a prudent person acting in like
capacity  and  familiar  with  such  matters  would  use  in the  conduct  of an
enterprise  of a like  character  and with like aims,  provided,  however,  that
Trustee shall incur no liability to any person for any action taken  pursuant to
a direction,  request or approval given by Company which is contemplated by, and
in conformity with, the terms of the Plan(s) (as certified to the Trustee by the
Company)  or this Trust and is given in writing  by  Company.  In the event of a
dispute between  Company and a party,  Trustee may apply to a court of competent
jurisdiction to resolve the dispute. Company agrees to indemnify Trustee against
Trustee's  costs,  expenses  and  liabilities   (including  without  limitation,
reasonable  attorney's  fees and  expenses)  arising  out of or  relating to any
action or  inaction  taken by Trustee in  reliance  upon  direction,  request or
approval given by the Company.

         (b)  If  Trustee  undertakes  or  defends  any  litigation  arising  in
connection  with  this  Trust,  Company  agrees  to  indemnify  Trustee  against
Trustee's  costs,  expenses  and  liabilities  (including,  without  limitation,
attorneys' fees and expenses)  relating  thereto and to be primarily  liable for
such payments. If Company does not pay such costs, expenses and liabilities in a
reasonably timely manner, Trustee may obtain payment from the Trust.

         (c) Trustee may consult with legal counsel (who may also be counsel for
Company generally) with respect to any of its duties or obligations hereunder.

         (d)  Trustee  may  hire  agents,  accountants,   actuaries,  investment
advisors,   financial  consultants  or  other  professionals  to  assist  it  in
performing any of its duties or obligations hereunder.

         (e) Trustee  shall have,  without  exclusion,  all powers  conferred on
Trustees  by  applicable  law,  unless  expressly   provided  otherwise  herein,
provided, however, that if an insurance policy is held as an asset of the Trust,
Trustee shall have no power to name a  beneficiary  of the policy other than the
Trust,  to assign the policy (as  distinct  from  conversion  of the policy to a
different form) other than to a successor Trustee,  or to loan to any person the
proceeds of any borrowing against such policy.

         (f)  Notwithstanding  any powers  granted to Trustee  pursuant  to this
Trust  Agreement or to  applicable  law,  Trustee  shall not have any power that
could give this Trust the  objective  of carrying on a business and dividing the
gains therefrom,  within the meaning of section  301.7701-2 of the Procedure and
Administrative Regulations promulgated pursuant to the Internal Revenue Code.

         (g)  Notwithstanding  anything in this  Agreement to the contrary,  the
Trustee shall not be responsible or liable for any losses to the Trust resulting
from any event  beyond the  reasonable  control of the Trustee,  its agents,  or
subcustodians,   including   but  not  limited  to   nationalization,   strikes,
expropriation,  devaluation,  seizure,  or  similar  action by any  governmental
authority,  de facto,  or de jure;  or  enactment,  promulgation,  imposition or
enforcement  by  any  such  governmental  authority  of  currency  restrictions,
exchange  controls,  levies or other charges affecting the Trust's property;  or
the breakdown,  failure or  malfunction  of any utilities or  telecommunications
systems;  or any order or  regulation  of any  banking  or  securities  industry
including changes in market rules and market conditions  affecting the execution
or  settlement  of  transactions;  or acts or war,  terrorism,  insurrection  or
revolution;  or acts of God; or any other  similar or  third-party  event.  This
Section shall survive the termination of this Trust Agreement.

         Section 9.        Contractual Income and Settlement.

         (a)  Trustee  shall  credit  the Trust Fund with  income  and  maturity
proceeds on  securities  on  contractual  payment  date net of any taxes or upon
actual receipt as agreed between Trustee and Company.  To the extent Company and
Trustee have agreed to credit income on  contractual  payment date,  Trustee may
reverse such accounting entries with back value to the contractual  payment date
if Trustee  reasonable  believes  that such  amount  will not be  received by it
within a  reasonable  time  but in no  event  later  than  two  weeks  following
contractual payment date.

         (b) Trustee will attend to the settlement of securities transactions on
the basis of either  contractual  settlement day accounting or actual settlement
day accounting as agreed between Company and Trustee.  To the extent Company and
Trustee have agreed to settle certain  securities  transactions  on the basis of
contractual  settlement date accounting,  Trustee may reverse with back value to
the contractual  settlement day an entry relating to such contractual settlement
where the related  transactions  remain unsettled but in no event later than two
weeks following contractual settlement date.

         (c)  Settlements  of  transactions  may  be  effected  in  trading  and
processing   practices  customary  in  the  jurisdiction  or  market  where  the
transaction  occurs.  The  Company   acknowledges  that  this  may,  in  certain
circumstances,  require the delivery of cash or securities  (or other  property)
without the concurrent  receipt of securities (or other property) or cash and in
such circumstances, the Company shall have sole responsibility for nonreceipt of
payment (or late payment) by the counterparty.

         Section 10.       Compensation and Expense of Trustee.

         (a)      Company shall pay all  administrative and Trustee's fees and
expenses.  If not so paid, the fees and expenses shall be paid from the Trust.

         (b) If Trustee  advances cash or securities for any purpose,  including
the purchase or sale of foreign  exchange or of contracts for foreign  exchange,
or in the  event  that  Trustee  shall  incur or be  assessed  taxes,  interest,
charges,  expenses,  assessments,  or other  liabilities in connection  with the
performance of this  Agreement,  except such as may arise from its own negligent
action, negligent failure to act or willful misconduct, any property at any time
held for the Trust Fund under this  agreement  shall be  security  therefor  and
Trustee  shall be entitled to collect  from the Trust Fund  sufficient  cash for
reimbursement,  and if such cash is  insufficient,  dispose of the assets of the
Trust  Fund  held  under  this  Agreement  to the  extent  necessary  to  obtain
reimbursement.   To  the  extent  Trustee   advances  funds  to  the  Trust  for
disbursement or to effect the settlement of purchase transactions, Trustee shall
be entitled to collect  from the Trust Fund any amount  equal to what would have
been earned on the sums advanced (an amount  approximating  the "federal  funds"
interest rate) and with respect to foreign  assets,  the rate  applicable to the
appropriate foreign market.

         Section 11.       Resignation and Removal of Trustee.

         (a) Trustee may resign at any time by written notice to Company,  which
shall be effective  thirty (30) days after receipt of such notice unless Company
and Trustee agree otherwise.

         (b) Prior to a Change of Control,  Trustee may be removed by Company on
thirty (30) days notice or upon shorter notice accepted by Trustee.

         (c) Upon Change of Control, as defined herein, Trustee may not be
removed by Company for one year.

         (d) If  Trustee  resigns  within  one year of a Change of  Control,  as
defined herein,  Trustee shall select a successor trustee in accordance with the
provisions  of Section  12(b)  hereof prior to the  effective  date of Trustee's
resignation or removal.

         Section 12.       Appointment of Successor.

         (a) If Trustee  resigns or is removed in accordance  with Section 11(a)
or (b)  hereof,  Company  may  appoint  any third  party,  such as a bank  trust
department  or other party that may be granted  corporate  trustee  powers under
state law, as a successor to replace  Trustee upon  resignation or removal.  The
appointment shall be effective when accepted in writing by the new Trustee,  who
shall  have all of the  rights  and  powers  of the  former  Trustee,  including
ownership  rights in the Trust  assets.  The former  Trustee  shall  execute any
instrument necessary or reasonably requested by Company or the successor Trustee
to evidence the transfer.

         (b) If Trustee  resigns or is removed  pursuant  to the  provisions  of
Section  11(d) hereof and selects a successor  trustee,  Trustee may appoint any
third party such as a bank trust  department  or other party that may be granted
corporate trustee powers under state law. The appointment of a successor trustee
shall be effective when accepted in writing by the new trustee.  The new trustee
shall have all the rights and powers of the former Trustee,  including ownership
rights  in Trust  assets.  The  former  Trustee  shall  execute  any  instrument
necessary  or  reasonably  requested  by the  successor  trustee to evidence the
transfer.

         (c) The successor  Trustee need not examine the records and acts of any
prior  Trustee and may retain or dispose of existing  Trust  assets,  subject to
Sections 6 and 7 hereof.  The successor Trustee shall not be responsible for and
Company  shall  indemnify  and defend the  successor  Trustee  from any claim or
liability resulting from any action or inaction of any prior Trustee or from any
other past event,  or any  condition  existing at the time it becomes  successor
Trustee.

         Section 13.       Amendment or Termination.

         (a)  This  Trust  Agreement  may be  amended  by a  written  instrument
executed  by  Trustee  and  Company.  Notwithstanding  the  foregoing,  no  such
amendment  shall  conflict with the terms of the Plan(s) or shall make the Trust
revocable  after it has become  irrevocable  in  accordance  with  Section  1(b)
hereof.

         (b) The  Trust  shall  not  terminate  until  the  date on  which  Plan
participants and their beneficiaries are no longer entitled to benefits pursuant
to the terms of the Plan(s).  Upon termination of the Trust any assets remaining
in the Trust shall be returned to Company.

         (c) Upon written approval of participants or beneficiaries  entitled to
payment of benefits pursuant to the terms of the Plan(s),  Company may terminate
this Trust prior to the time all benefit  payments  under the Plan(s)  have been
made. All assets in the Trust at termination shall be returned to Company.

         (d) Notwithstanding  any other provision in this Trust Agreement,  this
Trust Agreement may not be amended within one year of the occurrence of a Change
of Control.

         Section 14.       Miscellaneous.

         (a) Any  provision of this Trust  Agreement  prohibited by law shall be
ineffective  to the extent of any such  prohibition,  without  invalidating  the
remaining provisions hereof.

         (b) Benefits payable to Plan participants and their beneficiaries under
this  Trust  Agreement  may not be  anticipated,  assigned  (either at law or in
equity), alienated, pledged, encumbered or subjected to attachment, garnishment,
levy, execution or other legal or equitable process.

         (c) This Trust Agreement shall be governed by and construed in
accordance with the laws of Texas.

         (d) For  purposes of this Trust,  Change of Control  shall mean either
(1) the purchase or other acquisition by any person, entity or group of persons,
within the meaning of section 13(d) or 14(d) of the  Securities  Exchange Act of
1934 ("Act"), or any comparable  successor  provisions,  of beneficial ownership
(within  the meaning of Rule 13d-3  promulgated  under the Act) of 30 percent or
more of either the  outstanding  shares of common stock or the  combined  voting
power  of  Company's  then  outstanding  voting  securities   entitled  to  vote
generally,  or the approval by the stockholders of Company of a  reorganization,
merger, or  consolidation,  in each case, with respect to which persons who were
stockholders  of Company  immediately  prior to such  reorganization,  merger or
consolidation do not,  immediately  thereafter,  own more than 50 percent of the
combined voting power entitled to vote generally in the election of directors of
the reorganized,  merged or consolidated Company's then outstanding  securities,
or  a  liquidation  or  dissolution  of  Company  or  of  the  sale  of  all  or
substantially  all of Company's  assets;  or (2) the  cessation to serve for any
reason of Harold C. Simmons as Trustee of the Harold C. Simmons Family Trust No.
1, u/a  January  1, 1964  and/or the Harold C.  Simmons  Family  Trust No. 2 u/a
January 1, 1964.

               The Trustee shall have no independent duty of inquiry with
respect to the  occurrence  of a Change in Control.  Company  shall  furnish the
Trustee with written  notice of the  occurrence  of a Change in Control.  Absent
such  notice,  if any Plan  participant  shall  provide the Trustee with written
notice of a possible Change of Control, the Trustee may request that the Company
furnish  evidence  to  determine  whether a Change of Control has  occurred.  In
performing any of its obligations or taking any discretionary  action under this
Trust Agreement which is dependent upon a Change of Control having occurred, the
Trustee may rely on its determination, including any determination based upon an
opinion of counsel  (who may be counsel to the  Company or the  Trustee) or upon
information  provided by the  continuing  Directors  of the Company or otherwise
available  to the  Trustee,  that a Change of  Control  has  occurred.  For this
purpose,  the  continuing  Directors of the Company as of the time of a possible
change of control or insolvency are the persons who were  directors  immediately
prior to such possible change of control or insolvency.

         (e) Under no  circumstances  shall  Trustee be liable for any indirect,
consequential, or special damages with respect to its role as Trustee.

         (f)  Notwithstanding  anything to the contrary  contained  elsewhere in
this Trust Agreement, any reference to the Plan or Plan provisions which require
knowledge or  interpretation of the Plan shall impose a duty upon the Company to
communicate such knowledge or interpretation  to the Trustee.  The Trustee shall
have no  obligation to know or interpret any portion of the Plan and shall in no
way be liable for any proper action taken contrary to the Plan.

         (g) Company and Trustee  hereby each represent and warrant to the other
that it has full  authority  to enter  into  this  Agreement  upon the terms and
conditions  hereof and that the  individual  executing  this  Agreement on their
behalf has the requisite authority to bind Company or Trustee to this Agreement.

         Section 15.       Effective Date.

         The effective date of this Amended and Restated Contran Deferred
Compensation Trust No. 2 Agreement shall be January 1, 1999.














                  [Balance of page intentionally left blank.]






CONTRAN CORPORATION                       BOSTON SAFE DEPOSIT AND TRUST COMPANY



By: /s/ Steven L. Watson                  By: /s/ John F. McCarrick
    -----------------------------             -------------------------------
    Steven L. Watson                          Printed Name: John F. McCarrick
    President                                 Title:  Vice President






                                   APPENDIX A

               List of Nonqualified Deferred Compensation Plan(s)

1. Amended and Restated Deferred Compensation  Agreement,  As Of January 1, 1999
(Originally  Established  October  31,  1984)  between  Contran  Corporation,  a
Delaware corporation, and Harold C. Simmons, a resident of Dallas, Texas.