NL INDUSTRIES INC — Director's Dealing 2004

Sep 30, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-09-28

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 (Director, Chairman of the Board & CEO, 10% Owner)
Reporting Person: NATIONAL CITY LINES INC (10% Owner)
Reporting Person: DIXIE RICE AGRICULTURE CORP INC (10% Owner)
Reporting Person: SOUTHWEST LOUISIANA LAND CO INC (10% Owner)
Reporting Person: TIMET FINANCE MANAGEMENT CO (10% Owner)
Reporting Person: TITANIUM METALS CORP (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-09-28	Common Stock $0.01 par value	J	298769	—	Disposed	24081128	Indirect
2004-09-28	Common Stock $0.01 par value	J	186020	—	Acquired	16584370	Indirect
2004-09-28	Common Stock $0.01 par value	J	63058	—	Acquired	5311899	Indirect
2004-09-28	Common Stock $0.01 par value	J	1370	—	Acquired	2850	Indirect

Footnotes

F1: On September 28, 2004, NL Industries, Inc. ("NL") distributed (the "Distribution") to its shareholders 1/162nd 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 September 13, 2004, the record date for the Distribution. In the aggregate, NL
distributed 298,769 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 Exhibit 99 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 Exhibit 99 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 Exhibit 99 to this statement for a description of the
relationships among the persons joining in this filing.

F5: Directly held by TIMET Finance Management Company. See the Additional Information filed as Exhibit 99 to this statement for
a description of the relationships among the persons joining in this filing.