NL INDUSTRIES INC — Director's Dealing 2005

Jan 3, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-12-29

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: 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: TITANIUM METALS CORP (10% Owner)
Reporting Person: TIMET FINANCE MANAGEMENT CO (10% Owner)
Reporting Person: SIMMONS HAROLD C (Director, Chairman of the Board & CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-12-29	Common Stock $0.01 par value	J	200	$41	Disposed	18499555	Indirect
2004-12-29	Common Stock $0.01 par value	J	247634	—	Disposed	18251921	Indirect
2004-12-29	Common Stock $0.01 par value	J	154066	—	Acquired	22255509	Indirect
2004-12-29	Common Stock $0.01 par value	J	52226	—	Acquired	5364125	Indirect
2004-12-29	Common Stock $0.01 par value	J	1135	—	Acquired	3985	Indirect

Footnotes

F1: Open market sale 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.

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: On December 29, 2004, NL Industries, Inc. ("NL") distributed (the "Distribution") to its shareholders approximately 0.005 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 December 13, 2004, the record date for the Distribution. In the aggregate,
NL distributed 247,634 shares of Kronos Worldwide common stock to holders of NL common stock.

F4: 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.

F5: 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.

F6: 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.