Nl Industries, Inc. Announces Third Quarter Dividend

Houston, Texas – June 13, 2001 – NL Industries, Inc. ("NL") (NYSE:NL) appointed Ann Manix as a director of NL and a member of its audit committee effective June 8, 2001. Ms. Manix is currently managing partner of Ducker Research Corporation, a privately held industrial research firm. Prior to assuming her present position with Ducker Research Corporation in 1993, Ms. Manix was President and Chief Executive Officer of Hallen Company, a manufacturer of wine openers and accessories. Ms. Manix also serves as a director of CompX International, Inc., a manuacturer of ergonomic computer support systems, precision ball bearing slides, and security products.

NL Industries, Inc. is a major international producer of titanium dioxide pigments.