Company Update

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C.   20549   FORM 8-K/A   CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of the earliest event reported) May 19, 2010   NL Industries, Inc. (Exact name of registrant as specified in its charter)   New Jersey 1-640 13-5267260 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)             5430 LBJ Freeway, Suite 1700, Dallas, Texas 75240-2697 (Address of principal executive offices) (Zip Code)   Registrant’s telephone number, including area code (972) 233-1700           (Former name or former address, if changed since last report.)     Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2):   o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)     ¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)     ¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))     ¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))       Explanatory Note:  This Form 8-K/A amends and restates Exhibit 99.1 of the Form 8-K that the registrant filed with the U.S. Securities and Exchange Commission on May 19, 2010 in order to conform the heading of the exhibit to the heading of the actual press release issued by the registrant on May 19, 2010. Item 9.01 Financial Statements and Exhibits. (d) Exhibits               Item No.   Exhibit Index           99.1   Press release dated May 19, 2010 issued by the registrant.       SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.   NL Industries, Inc.   (Registrant)                   By:         /s/ A. Andrew R. Louis                                                              Date:  May 19, 2010 A. Andrew R. Louis, Secretary       INDEX TO EXHIBITS Item No.   Exhibit Index       99.1   Press release dated May 19, 2010 issued by the registrant.