X0201 4 2004-02-17 0 0001257640 KRONOS WORLDWIDE INC kro 0000024240 CONTRAN CORP 5430 LBJ FRWY SUITE 1700 DALLAS TX 75240 0 0 1 0 0000059255 VALHI INC /DE/ THREE LINCOLN CENTER 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001074786 DIXIE HOLDING CO 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001074787 DIXIE RICE AGRICULTURE CORP INC 600 PASQUIERE ST GUEYDAN LA 70542 0 0 1 0 0000069972 NATIONAL CITY LINES INC 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001074789 NOA INC 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001074790 SOUTHWEST LOUISIANA LAND CO INC 402 CANAL ST HOUMA LA 70360 0 0 1 0 0000842718 TREMONT LLC 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001074793 VALHI GROUP INC 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001037854 SIMMONS HAROLD C THREE LINCOLN CENTRE 5430 LBJ FREEWAY STE 1700 DALLAS TX 75240-2697 0 0 1 0 Common Stock $0.01 par value 2004-02-17 4 J 0 4900 28 A 15648894 I by Valhi Common Stock $0.01 par value 2004-02-17 4 J 0 100 27.98 A 15648994 I by Valhi Common Stock $0.01 par value 2004-02-19 4 J 0 700 27.99 A 15649694 I by Valhi Common Stock $0.01 par value 2004-02-19 4 J 0 12300 28 A 15661994 I by Valhi Common Stock $0.01 par value 25047507 I by NL Common Stock $0.01 par value 5107770 I by Tremont Open market purchase by Valhi, Inc. See the Additional Information filed as an exhibit to this statement for a description of the relationship among the persons joining in this filing. Directly held by Valhi, Inc. See the Additional Information filed as an exhibit to this statement for a description of the relationship among the persons joining in this filing. Directly held by NL Industries, Inc. See the Additional Information filed as an exhibit to this statement for a description of the relationship among the persons joining in this filing. Directly held by Tremont LLC. See the Additional Information filed as an exhibit to this statement for a description of the relationship among the persons joining in this filing. Mr. Harold C. Simmons and his spouse directly hold 3,000 and 34,737 shares, respectively, of the common stock of the issuer. Mr. Simmons disclaims beneficial ownership of the shares of the issuer's common stock that his spouse owns. This form is also filed on behalf of: NL Industries, Inc. 5430 LBJ Freeway, Suite 1700 Dallas, TX 75240 By: /s/ A. Andrew R. Louis ------------------------ Assistant Secretary See the Additional Information filed as an exhibit to this statement for a description of the relationship among the persons joining in this filing. A. Andrew R. Louis, Secretary, for Contran Corporation 2004-02-19 A. Andrew R. Louis, Secretary, for Dixie Holding Company 2004-02-19 A. Andrew R. Louis, Secretary, for Dixie Rice Agricultural Corporation, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for National City Lines, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for NOA, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for Southwest Louisiana Land Company, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for Valhi Group, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for Valhi, Inc. 2004-02-19 A. Andrew R. Louis, Secretary, for Tremont LLC 2004-02-19 A. Andrew R. Louis, Attorney-in-fact for Harold C. Simmons 2004-02-19