NL INDUSTRIES INC — Director's Dealing 2004

Dec 8, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-12-06

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
2004-12-06	Common Stock $0.01 par value	J	400	$44.1	Disposed	18546855	Indirect
2004-12-06	Common Stock $0.01 par value	J	500	$43.27	Disposed	18546355	Indirect
2004-12-06	Common Stock $0.01 par value	J	100	$43.49	Disposed	18546255	Indirect
2004-12-07	Common Stock $0.01 par value	J	100	$42.44	Disposed	18546155	Indirect
2004-12-07	Common Stock $0.01 par value	J	900	$42.43	Disposed	18545255	Indirect
2004-12-07	Common Stock $0.01 par value	J	200	$42.32	Disposed	18545055	Indirect
2004-12-07	Common Stock $0.01 par value	J	200	$42.2	Disposed	18544855	Indirect
2004-12-07	Common Stock $0.01 par value	J	100	$42.1	Disposed	18544755	Indirect
2004-12-07	Common Stock $0.01 par value	J	1300	$42.05	Disposed	18543455	Indirect
2004-12-07	Common Stock $0.01 par value	J	1300	$43.04	Disposed	18542155	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock $0.01 par value	22101443	Indirect
Common Stock $0.01 par value	5311899	Indirect
Common Stock $0.01 par value	2850	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: 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.