NL INDUSTRIES INC — Director's Dealing 2004

Dec 17, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-12-15

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
2004-12-15	Common Stock $0.01 par value	J	200	$41	Disposed	18537355	Indirect
2004-12-15	Common Stock $0.01 par value	J	2000	$41.1	Disposed	18535355	Indirect
2004-12-15	Common Stock $0.01 par value	J	7200	$41.25	Disposed	18528155	Indirect
2004-12-15	Common Stock $0.01 par value	J	600	$41.26	Disposed	18527555	Indirect
2004-12-15	Common Stock $0.01 par value	J	2000	$41.35	Disposed	18525555	Indirect
2004-12-15	Common Stock $0.01 par value	J	1000	$41.4	Disposed	18524555	Indirect
2004-12-15	Common Stock $0.01 par value	J	2000	$41.5	Disposed	18522555	Indirect
2004-12-15	Common Stock $0.01 par value	J	4000	$41.6	Disposed	18518555	Indirect
2004-12-15	Common Stock $0.01 par value	J	3400	$41.7	Disposed	18515155	Indirect
2004-12-15	Common Stock $0.01 par value	J	500	$41.71	Disposed	18514655	Indirect
2004-12-15	Common Stock $0.01 par value	J	100	$41.78	Disposed	18514555	Indirect
2004-12-16	Common Stock $0.01 par value	J	500	$41.75	Disposed	18514055	Indirect
2004-12-16	Common Stock $0.01 par value	J	100	$41.5	Disposed	18513955	Indirect
2004-12-16	Common Stock $0.01 par value	J	600	$41.55	Disposed	18513355	Indirect
2004-12-16	Common Stock $0.01 par value	J	800	$41.57	Disposed	18512555	Indirect
2004-12-16	Common Stock $0.01 par value	J	400	$41.81	Disposed	18512155	Indirect
2004-12-16	Common Stock $0.01 par value	J	200	$41.8	Disposed	18511955	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.