EXHIBIT 23.2



            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


We  hereby  consent  to the  incorporation  by  reference  in  the  Registration
Statements on Form S-8 (Nos.  33-29287,  33-25913,  333-65817 and 33-48145 of NL
Industries,   Inc.  of  our  report  dated  March  16,  2006,  relating  to  the
consolidated financial statements,  managements' assessment of the effectiveness
of internal control over financial  reporting and the  effectiveness of internal
control  over  financial   reporting  of  Kronos   Worldwide,   Inc.,  which  is
incorporated by reference in this Form 10-K.






PricewaterhouseCoopers LLP



Dallas, Texas
March 16, 2006