NL INDUSTRIES INC — Director's Dealing 2004

Jul 28, 2004

SEC Form 4/A — Form 4/A

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-03-29

Reporting Person: CONTRAN CORP (10% Owner)
Reporting Person: NL INDUSTRIES INC (10% Owner)
Reporting Person: VALHI INC /DE/ (10% Owner)
Reporting Person: TREMONT LLC (10% Owner)
Reporting Person: SIMMONS HAROLD C (10% Owner)
Reporting Person: NATIONAL CITY LINES INC (10% Owner)
Reporting Person: NOA INC (10% Owner)
Reporting Person: DIXIE RICE AGRICULTURE CORP INC (10% Owner)
Reporting Person: DIXIE HOLDING CO (10% Owner)
Reporting Person: SOUTHWEST LOUISIANA LAND CO INC (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-03-29	Common Stock $0.01 par value	J	345121	—	Disposed	24702386	Indirect
2004-03-29	Common Stock $0.01 par value	J	215254	—	Acquired	16029148	Indirect
2004-03-29	Common Stock $0.01 par value	J	72968	—	Acquired	5180738	Indirect

Footnotes

F1: On March 29, 2004, NL Industries, Inc. ("NL") distributed (the "Distribution") to its shareholders 1/140th of a share of
common stock of Kronos Worldwide, Inc., a subsidiary of NL ("Kronos Worldwide"), for every share of NL common stock
outstanding as of the close of business on March 11, 2004, the record date for the Distribution. In the aggregate, NL
distributed 345,121 shares of Kronos Worldwide common stock to holders of NL common stock.

F2: Directly held by NL Industries, Inc. See the Additional Information filed as an exhibit to this statement for a description
of the relationships among the persons joining in this filing.

F3: Directly held by Valhi, Inc. See the Additional Information filed as an exhibit to this statement for a description of the
relationships among the persons joining in this filing.

F4: Directly held by Tremont LLC. See the Additional Information filed as an exhibit to this statement for a description of the
relationships among the persons joining in this filing.