NL INDUSTRIES INC — Director's Dealing 2006

Jul 19, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NL INDUSTRIES INC (NL)
CIK: 0000072162
Period of Report: 2006-07-18

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
2006-07-18	Common stock $0.125 par value	P	4900	$9.45	Acquired	494500	Direct
2006-07-18	Common stock $0.125 par value	P	400	$9.48	Acquired	494900	Direct
2006-07-18	Common stock $0.125 par value	P	3800	$9.47	Acquired	498700	Direct
2006-07-18	Common stock $0.125 par value	P	800	$9.46	Acquired	499500	Direct
2006-07-18	Common stock $0.125 par value	P	200	$9.49	Acquired	499700	Direct
2006-07-18	Common stock $0.125 par value	P	6200	$9.50	Acquired	505900	Direct
2006-07-18	Common stock $0.125 par value	P	500	$9.57	Acquired	506400	Direct
2006-07-18	Common stock $0.125 par value	P	200	$9.58	Acquired	506600	Direct
2006-07-18	Common stock $0.125 par value	P	3400	$9.62	Acquired	510000	Direct
2006-07-18	Common stock $0.125 par value	P	4100	$9.65	Acquired	514100	Direct
2006-07-18	Common stock $0.125 par value	P	1600	$9.64	Acquired	515700	Direct
2006-07-18	Common stock $0.125 par value	P	1500	$9.70	Acquired	517200	Direct
2006-07-18	Common stock $0.125 par value	P	700	$9.78	Acquired	517900	Direct
2006-07-18	Common stock $0.125 par value	P	1600	$9.80	Acquired	519500	Direct
2006-07-18	Common stock $0.125 par value	P	300	$9.82	Acquired	519800	Direct
2006-07-18	Common stock $0.125 par value	P	900	$9.84	Acquired	520700	Direct
2006-07-18	Common stock $0.125 par value	P	200	$9.85	Acquired	520900	Direct
2006-07-18	Common stock $0.125 par value	P	500	$9.87	Acquired	521400	Direct
2006-07-18	Common stock $0.125 par value	P	1600	$9.88	Acquired	523000	Direct
2006-07-18	Common stock $0.125 par value	P	900	$9.89	Acquired	523900	Direct
2006-07-18	Common stock $0.125 par value	P	15700	$9.90	Acquired	539600	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common stock $0.125 par value	256575	Indirect
Common stock $0.125 par value	40350931	Indirect
Common stock $0.125 par value	222100	Indirect

Footnotes

F1: Directly held by the Reporting Person's spouse. The Reporting Person disclaims beneficial ownership of these shares.

F2: 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.

F3: Directly held by TIMET Finance Management Company. See the Additional Information filed as an exhibit to this
statement for a description of the relationships among the persons joining in this filing.