NL INDUSTRIES INC
10-K/A, 1999-06-29
INDUSTRIAL INORGANIC CHEMICALS
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                FORM 10-K / A-1


|X|  ANNUAL REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES  EXCHANGE
     ACT OF 1934 - For the fiscal year ended December 31, 1998

                                      OR

|_|  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

                         Commission file number 1-640

                             NL INDUSTRIES, INC.
- --------------------------------------------------------------------------------
            (Exact name of registrant as specified in its charter)

          New Jersey                                       13-5267260
- -------------------------------                       -------------------
(State or other jurisdiction of                         (IRS Employer
 incorporation or organization)                       Identification No.)

16825 Northchase Drive, Suite 1200, Houston, Texas        77060-2544
- --------------------------------------------------        ----------
   (Address of principal executive offices)               (Zip Code)

Registrant's telephone number, including area code:      (281) 423-3300

Securities registered pursuant to Section 12(b) of the Act:

                                             Name of each exchange on
     Title of each class                         which registered
- ------------------------------               ------------------------
Common stock ($.125 par value)               New York Stock Exchange
                                             Pacific Exchange

Securities registered pursuant to Section 12(g) of the Act:  None.

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months,  and (2) has been subject to such filing  requirements
for the past 90 days.     Yes X              No

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. |_|

As of March 22, 1999,  51,826,139 shares of common stock were  outstanding.  The
aggregate  market  value  of the  11,475,208  shares  of  voting  stock  held by
nonaffiliates as of such date approximated $107 million.

                     Documents incorporated by reference:

The  information  required by Part III is  incorporated  by  reference  from the
Registrant's  definitive  proxy  statement to be filed with the  Securities  and
Exchange Commission pursuant to Regulation 14A not later than 120 days after the
end of the fiscal year covered by this report.


<PAGE>



The  undersigned   Registrant  hereby  amends  the  following  items,  financial
statements, exhibits or other portions of its Annual Report on Form 10-K for the
year  ended  December  31,  1998 as set forth  below  and in the pages  attached
hereto:

Item 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES,
         AND REPORTS ON FORM 8-K.

         Exhibit No. 99.1, Annual Report of NL Industries, Inc. Retirement
         Savings Plan on Form 11-K for the year ended December 31, 1998 (filed
         as an amendment to the Registrant's Annual Report on Form 10-K for the
         year ended December 31, 1998).




<PAGE>



      Pursuant to the  requirements of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  amendment  to be signed on its behalf by the
undersigned, thereunto duly authorized.



                                                     NL INDUSTRIES, INC.
                                                ------------------------------
                                                         (Registrant)



Dated:  June 4, 1999                      By:   /s/ Robert D. Hardy
                                                ------------------------------
                                                Robert D. Hardy
                                                Vice President and Controller








                                                                  Exhibit 99.1



                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                  FORM 11-K


                Annual Report Pursuant to Section 15(d) of the
                       Securities Exchange Act of 1934


|X|   Annual report pursuant to Section 15(d) of the Securities  Exchange Act of
      1934 - for the year ended December 31, 1998

                                      or

|_|   Transition report pursuant to Section 15(d) of the Securities Exchange
      Act of 1934 - for the transition period from       to

                         Commission file number 1-640


      A. Full title of the plan and the address of the plan,  if different  from
that of the issuer named below:

                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

      B. Name of  issuer of the  securities  held  pursuant  to the plan and the
address of its principal executive office:

                             NL INDUSTRIES, INC.
                      16825 Northchase Drive, Suite 1200
                          Houston, Texas 77060-2544





<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

                                    INDEX



                                                                    Page

Signature Page                                                        2

Financial Statements and Supplemental Schedules
 with Report of Independent Accountants                          F-1 to F-19

Exhibit I - Consent of Independent Accountants


                                   - 1 -

<PAGE>



                                   SIGNATURE


      Pursuant  to  the   requirements  of  the  Securities  Act  of  1934,  the
Administrator has duly caused this Annual Report to be signed by the undersigned
thereunto duly authorized.


                              NL INDUSTRIES, INC.
                              RETIREMENT SAVINGS PLAN

                        By:   NL INDUSTRIES, INC.
                              PENSION AND EMPLOYEE
                              BENEFITS COMMITTEE,
                              Administrator of
                              NL Industries, Inc.
                              Retirement Savings Plan


                        By:   /s/ Robert D. Hardy
                              ------------------------
                              Robert D. Hardy
                              PEBCO Committee Chairman


June 4, 1999


                                   - 2 -


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN



      FINANCIAL STATEMENTS, FUND INFORMATION AND SUPPLEMENTAL SCHEDULES
                    WITH REPORT OF INDEPENDENT ACCOUNTANTS

                              December 31, 1998



<PAGE>



                              NL INDUSTRIES INC.
                           RETIREMENT SAVINGS PLAN


                                     INDEX



                                                                      Page

Report of Independent Accountants                                      F-2

Financial Statements:

 Statements of Net Assets Available for Benefits with
  Fund Information - December 31, 1997 and 1998                    F-3 to F-6

 Statements of Changes in Net Assets Available for
  Benefits with Fund Information - Years ended
  December 31, 1997 and 1998                                       F-7 to F-10

 Notes to Financial Statements                                    F-11 to F-17

Supplemental Schedules:

 Item 27a - Schedule of Assets Held for Investment Purposes
  - December 31, 1998                                                 F-18

 Item 27d - Schedule of Reportable Transactions
  - Year ended December 31, 1998                                      F-19

All other schedules are omitted because they are not applicable or not required.

                                    F-1

<PAGE>






                       REPORT OF INDEPENDENT ACCOUNTANTS


To the Pension and Employee Benefits Committee of
NL Industries, Inc.:

      In our opinion,  the  accompanying  statements of net assets available for
benefits  and the  related  statements  of changes in net assets  available  for
benefits present fairly, in all material respects,  the net assets available for
benefits of the NL  Industries,  Inc.  Retirement  Savings  Plan (the "Plan") at
December 31, 1997 and 1998, and the changes in net assets available for benefits
for the years  then  ended in  conformity  with  generally  accepted  accounting
principles.  These  financial  statements are the  responsibility  of the Plan's
management;  our  responsibility  is to express  an  opinion on these  financial
statements  based on our audits.  We conducted our audits of these statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements,  assessing the accounting  principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion  expressed
above.

      Our audits  were  conducted  for the  purpose of forming an opinion on the
basic financial  statements  taken as a whole. The  supplemental  schedules,  as
listed on the  accompanying  index,  are presented for the purpose of additional
analysis and are not a required part of the basic  financial  statements but are
supplementary  information  required  by the  Department  of  Labor's  Rules and
Regulations for Reporting and Disclosure  under the Employee  Retirement  Income
Security  Act of 1974.  The fund  information  in the  statements  of net assets
available for benefits and the statements of changes in net assets available for
benefits is presented for purposes of additional analysis rather than to present
the net assets  available for plan benefits and changes in net assets  available
for benefits of each fund. These supplemental schedules and fund information are
the responsibility of the Plan's management. The supplemental schedules and fund
information have been subjected to the auditing procedures applied in the audits
of the basic financial  statements and, in our opinion, are fairly stated in all
material  respects  in  relation to the basic  financial  statements  taken as a
whole.




                                    PricewaterhouseCoopers LLP
Houston, Texas
June 4, 1999

                                    F-2

<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

    STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION

                              December 31, 1997

<TABLE>
<CAPTION>

                                                                        Fund Information
                                      ----------------------------------------------------------------------------------------------
                                                                      AIM                                                 ML Global
                                      MFS Emerging   Templeton    International  AIM Value   MFS Government   ML Equity   Allocation
                                      Growth Fund    World Fund    Equity Fund     Fund     Securities Fund  Index Trust  Fund, Inc.
                                      ------------   ----------   -------------  ---------  ---------------  ------------ ----------

<S>                                    <C>           <C>           <C>           <C>           <C>           <C>          <C>
Investments at fair value:
  Common stock ....................    $     --      $     --      $     --      $     --      $     --      $     --     $     --
  Other securities ................     1,752,287     1,709,815       358,685     2,339,828       412,430     1,471,539      581,012
Employer contributions receivable .       124,285        73,966        63,591       109,733        23,007        99,692       49,464
Cash ..............................          --            --            --            --            --            --           --
                                       ----------    ----------    ----------    ----------    ----------    ----------   ----------

  Net assets available for benefits    $1,876,572    $1,783,781    $  422,276    $2,449,561    $  435,437    $1,571,231   $  630,476
                                       ==========    ==========    ==========    ==========    ==========    ==========   ==========
</TABLE>


                                    F-3


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

                STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                        December 31, 1997 (Continued)

<TABLE>
<CAPTION>

                                                    Fund Information (Continued)
                               --------------------------------------------------------------------
                               ML Federal   ML Capital      ML Basic       ML Retirement  ML Global
                               Securities     Fund,          Value        Preservation    Holdings,
                                  Trust        Inc.           Fund             Trust         Inc.
                               ----------   ----------     ----------      -------------  ---------

<S>                            <C>          <C>            <C>            <C>             <C>
Investments at fair value:
  Common stock ...........     $   --       $     --       $     --       $      --       $   --
  Other securities .......      559,444      5,280,559      4,553,826      18,770,319      572,120
Employer contributions
 receivable ..............       44,877        226,750        233,642         425,833          431
Cash .....................         --             --             --              --           --
                               --------     ----------     ----------     -----------     --------
  Net assets available for
   benefits ..............     $604,321     $5,507,309     $4,787,468     $19,196,152     $572,551
                               ========     ==========     ==========     ===========     ========

<CAPTION>
                                  Fund Information (Continued)
                                      Common Stock Funds
                               -----------------------------------
                                              Dresser/      Cash
                                   NL         Tremont       Fund          Total
                               ----------     --------     -------     -----------

<S>                            <C>            <C>          <C>         <C>
Investments at fair value:
  Common stock ...........     $2,922,905     $641,313     $  --       $ 3,564,218
  Other securities .......           --           --          --        38,361,864
Employer contributions
 receivable ..............        119,072         --          --         1,594,343
Cash .....................           --           --        67,673          67,673
                               ----------     --------     -------     -----------
  Net assets available for
   benefits ..............     $3,041,977     $641,313     $67,673     $43,588,098
                               ==========     ========     =======     ===========
</TABLE>


                                    F-4


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

                STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                              December 31, 1998
<TABLE>
<CAPTION>


                                                                        Fund Information
                                      ----------------------------------------------------------------------------------------------
                                                                      AIM                                                 ML Global
                                      MFS Emerging   Templeton    International  AIM Value   MFS Government   ML Equity   Allocation
                                      Growth Fund    World Fund    Equity Fund     Fund     Securities Fund  Index Trust  Fund, Inc.
                                      ------------   ----------   -------------  ---------  ---------------  ------------ ----------

<S>                                     <C>            <C>          <C>          <C>            <C>          <C>          <C>
Investments at fair value:
  Common stock ....................     $     --       $   --       $   --       $     --       $   --       $   --       $   --
  Other securities ................      1,278,402      615,177      267,444      1,027,619      271,136      462,080      249,476
Employer contributions receivable .         45,031       24,465       19,677         59,013       12,399       36,780       18,763
                                        ----------     --------     --------     ----------     --------     --------     --------

  Net assets available for benefits     $1,323,433     $639,642     $287,121     $1,086,632     $283,535     $498,860     $268,239
                                        ==========     ========     ========     ==========     ========     ========     ========
</TABLE>




                                    F-5


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

                STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                        December 31, 1998 (Continued)

<TABLE>
<CAPTION>

                                                    Fund Information (Continued)
                               --------------------------------------------------------------------
                               ML Federal   ML Capital      ML Basic       ML Retirement  ML Global
                               Securities     Fund,          Value        Preservation    Holdings,
                                  Trust        Inc.           Fund             Trust         Inc.
                               ----------   ----------     ----------      -------------  ---------

<S>                            <C>          <C>            <C>            <C>             <C>
Investments at fair value:
  Common stock ...........     $   --       $     --       $     --       $      --       $   --
  Other securities .......      440,463      2,918,680      3,053,911      12,532,499      290,054
Employer contributions
 receivable ..............       29,425         71,740        136,427          99,793         --
                               --------     ----------     ----------     -----------     --------

  Net assets available for
   benefits ..............     $469,888     $2,990,420     $3,190,338     $12,632,292     $290,054
                               ========     ==========     ==========     ===========     ========

<CAPTION>
                               Fund Information (Continued)
                               ----------------------------
                                   Common Stock Funds
                               ----------------------------
                                               Halliburton/
                                   NL            Tremont         Total
                               ----------      ------------   -----------

<S>                             <C>             <C>           <C>
Investments at fair value:
  Common stock ...........      $1,984,132      $363,730      $ 2,347,862
  Other securities .......            --            --         23,406,941
Employer contributions
 receivable ..............          45,019          --            598,532
                                ----------      --------      -----------

  Net assets available for
   benefits ..............      $2,029,151      $363,730      $26,353,335
                                ==========      ========      ===========

</TABLE>


                See accompanying notes to financial statements.
                                    F-6

<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION

                         Year ended December 31, 1997

<TABLE>
<CAPTION>

                                                                        Fund Information
                                      ----------------------------------------------------------------------------------------------
                                                                      AIM                                                 ML Global
                                      MFS Emerging   Templeton    International  AIM Value   MFS Government   ML Equity   Allocation
                                      Growth Fund    World Fund    Equity Fund     Fund     Securities Fund  Index Trust  Fund, Inc.
                                      ------------   ----------   -------------  ---------  ---------------  ------------ ----------

<S>                                   <C>           <C>             <C>           <C>           <C>             <C>        <C>
Investment income:
  Dividend income:
    Dresser Industries ...........    $     --      $      --       $    --       $     --      $      --       $     --   $   --
    Other ........................        16,432        194,010          --          236,781         16,123           --     74,407
  Interest income ................          --             --            --             --             --             --       --
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

  Total investment income ........        16,432        194,010          --          236,781         16,123           --     74,407
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

Net appreciation (depreciation) in
 the fair value of investments ...       233,438        (31,852)       22,165         (8,813)         7,213        271,995  (20,570)
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

Contributions:
  Participants ...................       169,064         89,722        70,688         91,659         42,494        119,406   58,203
  Employer .......................       124,450         74,021        63,646        109,788         23,171         99,802   49,627
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

  Total contributions ............       293,514        163,743       134,334        201,447         65,665        219,208  107,830
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

  Total income and contributions .       543,384        325,901       156,499        429,415         89,001        491,203  161,667
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

Net interfund transfers ..........       260,066        974,423      (120,241)     1,296,437        132,763        740,130   27,597
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

  Distributions ..................        32,191         27,708        42,858         34,903         13,034         27,932   61,713
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

Net change in net assets available
 for benefits ....................       771,259      1,272,616        (6,600)     1,690,949        208,730      1,203,401  127,551

Net assets available for benefits:
  Beginning of year ..............     1,105,313        511,165       428,876        758,612        226,707        367,830  502,925
                                      ----------    -----------     ---------     ----------    -----------     ---------- --------

  End of year ....................    $1,876,572    $ 1,783,781     $ 422,276     $2,449,561    $   435,437     $1,571,231 $630,476
                                      ==========    ===========     =========     ==========    ===========     ========== ========

</TABLE>

                                    F-7


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

           STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                   Year ended December 31, 1997 (Continued)

<TABLE>
<CAPTION>

                                                               Fund Information (Continued)
                                      --------------------------------------------------------------------------
                                      ML Federal     ML Capital        ML Basic       ML Retirement    ML Global
                                      Securities       Fund,            Value        Preservation      Holdings,
                                         Trust          Inc.             Fund             Trust           Inc.
                                      ----------     ----------       ----------      -------------    ---------

<S>                                    <C>            <C>              <C>            <C>               <C>
Investment income:
  Dividend income:
    Dresser Industries ...........     $    --        $      --        $     --       $       --        $    --
    Other ........................        57,617          446,830         332,407             --           67,211
  Interest income ................          --               --              --          1,295,411           --
                                       ---------      -----------      ----------     ------------      ---------

  Total investment income ........        57,617          446,830         332,407        1,295,411         67,211
                                       ---------      -----------      ----------     ------------      ---------


Net appreciation
 (depreciation) in the
 fair value of investments .......        21,707          515,983         625,862             --          (28,063)
                                       ---------      -----------      ----------     ------------      ---------

Contributions:
  Participants ...................        45,653          191,718         191,096          321,954           --
  Employer .......................        45,039          229,886         236,587          426,045           --
                                       ---------      -----------      ----------     ------------      ---------

  Total contributions ............        90,692          421,604         427,683          747,999           --
                                       ---------      -----------      ----------     ------------      ---------

  Total income and
   contributions .................       170,016        1,384,417       1,385,952        2,043,410         39,148
                                       ---------      -----------      ----------     ------------      ---------

Net interfund transfers ..........      (215,293)        (216,751)        342,202       (3,048,845)       (64,341)
                                       ---------      -----------      ----------     ------------      ---------

  Distributions ..................        10,782          302,681         105,763        2,792,244          3,841
                                       ---------      -----------      ----------     ------------      ---------

Net change in net assets
 available for benefits ..........       (56,059)         864,985       1,622,391       (3,797,679)       (29,034)

Net assets available for benefits:
  Beginning of year ..............       660,380        4,642,324       3,165,077       22,993,831        601,585
                                       ---------      -----------      ----------     ------------      ---------

  End of year ....................     $ 604,321      $ 5,507,309      $4,787,468     $ 19,196,152      $ 572,551
                                       =========      ===========      ==========     ============      =========

<PAGE>
<CAPTION>
                                       Fund Information (Continued)
                                           Common Stock Funds
                                   ------------------------------------
                                                   Dresser/      Cash
                                        NL         Tremont       Fund          Total
                                   -----------     --------     -------     -----------

<S>                                  <C>            <C>          <C>       <C>
Investment income:
  Dividend income:
    Dresser Industries ...........   $      --      $   8,817    $  --     $     8,817
    Other ........................          --           --        3,213     1,445,031
  Interest income ................          --           --         --       1,295,411
                                     -----------    ---------    -------   -----------

  Total investment income ........          --          8,817      3,213     2,749,259
                                     -----------    ---------    -------   -----------


Net appreciation
 (depreciation) in the
 fair value of investments .......       626,051      176,448       --       2,411,564
                                     -----------    ---------    -------   -----------

Contributions:
  Participants ...................        91,379         --         --       1,483,036
  Employer .......................       119,073         --         --       1,601,135
                                     -----------    ---------    -------   -----------

  Total contributions ............       210,452         --         --       3,084,171
                                     -----------    ---------    -------   -----------

  Total income and
   contributions .................       836,503      185,265      3,213     8,244,994
                                     -----------    ---------    -------   -----------

Net interfund transfers ..........      (164,438)      (2,561)    58,852          --
                                     -----------    ---------    -------   -----------

  Distributions ..................        65,308       32,776       --       3,553,734
                                     -----------    ---------    -------   -----------

Net change in net assets
 available for benefits ..........       606,757      149,928     62,065     4,691,260

Net assets available for benefits:
  Beginning of year ..............     2,435,220      491,385      5,608    38,896,838
                                     -----------    ---------    -------   -----------

  End of year ....................   $ 3,041,977    $ 641,313    $67,673   $43,588,098
                                     ===========    =========    =======   ===========

</TABLE>


                                    F-8


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

           STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                         Year ended December 31, 1998


<TABLE>
<CAPTION>

                                                                        Fund Information
                                      ----------------------------------------------------------------------------------------------
                                                                      AIM                                                 ML Global
                                      MFS Emerging   Templeton    International  AIM Value   MFS Government   ML Equity   Allocation
                                      Growth Fund    World Fund    Equity Fund     Fund     Securities Fund  Index Trust  Fund, Inc.
                                      ------------   ----------   -------------  ---------  ---------------  ------------ ----------

<S>                                  <C>            <C>            <C>          <C>            <C>          <C>           <C>
Investment income:
  Dividend income:
    NL Industries, Inc. ..........   $      --      $      --      $    --      $      --      $    --      $      --     $    --
    Halliburton Company ..........          --             --           --             --           --             --          --
    Dresser Industries ...........          --             --           --             --           --             --          --
    Tremont Corporation ..........          --             --           --             --           --             --          --
    Other ........................        11,692        132,397        5,780         62,572       21,304           --        28,954
  Interest income ................          --             --           --             --           --             --          --
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

  Total investment income ........        11,692        132,397        5,780         62,572       21,304           --        28,954
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

Net appreciation (depreciation) in
 the fair value of investments ...       354,126        (85,801)      46,443        420,196        7,294        333,231     (11,565)
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

Contributions:
  Participants ...................        65,968         29,445       40,487         78,531       13,359         38,208      22,453
  Employer .......................        45,032         24,465       19,677         59,013       12,398         36,780      18,762
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

  Total contributions ............       111,000         53,910       60,164        137,544       25,757         74,988      41,215
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

  Total income and contributions .       476,818        100,506      112,387        620,312       54,355        408,219      58,604
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

Net interfund transfers ..........       (59,634)      (957,929)     (34,577)    (1,125,860)     (64,127)      (142,787)   (173,518)
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

  Distributions ..................        46,915          8,701       29,944        129,760        3,206         46,079      21,963
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

Net change in net assets available
 for benefits ....................       370,269       (866,124)      47,866       (635,308)     (12,978)       219,353    (136,877)

Assets transferred to
 another plan ....................      (923,408)      (278,015)    (183,021)      (727,621)    (138,924)    (1,291,724)   (225,360)

Net assets available for benefits:
  Beginning of year ..............     1,876,572      1,783,781      422,276      2,449,561      435,437      1,571,231     630,476
                                     -----------    -----------    ---------    -----------    ---------    -----------   ---------

  End of year ....................   $ 1,323,433    $   639,642    $ 287,121    $ 1,086,632    $ 283,535    $   498,860   $ 268,239
                                     ===========    ===========    =========    ===========    =========    ===========   =========
</TABLE>



                                    F-9


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

           STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                       WITH FUND INFORMATION (CONTINUED)

                   Year ended December 31, 1998 (Continued)

<TABLE>
<CAPTION>

                                                             Fund Information (Continued)
                                    ---------------------------------------------------------------------
                                    ML Federal     ML Capital      ML Basic     ML Retirement   ML Global
                                    Securities       Fund,          Value       Preservation    Holdings,
                                      Trust          Inc.           Fund            Trust         Inc.
                                    ----------    -----------    ----------     -------------  ----------

<S>                                  <C>          <C>            <C>            <C>             <C>
Investment income:
  Dividend income:
    NL Industries, Inc. ..........   $    --      $      --      $      --      $       --      $    --
    Halliburton Company ..........        --             --             --              --           --
    Dresser Industries ...........        --             --             --              --           --
    Tremont Corporation ..........        --             --             --              --           --
    Other ........................      29,733        176,522        229,209            --         41,011
  Interest income ................        --             --             --         1,002,946         --
                                     ---------    -----------    -----------    ------------    ---------

  Total investment income ........      29,733        176,522        229,209       1,002,946       41,011
                                     ---------    -----------    -----------    ------------    ---------

Net appreciation
 (depreciation) in the
 fair value of investments .......       1,923        188,576        316,966            --         45,144
                                     ---------    -----------    -----------    ------------    ---------

Contributions:
  Participants ...................      25,955         87,075        133,404         100,027         --
  Employer .......................      29,422         71,739        136,427          99,794         --
                                     ---------    -----------    -----------    ------------    ---------

  Total contributions ............      55,377        158,814        269,831         199,821         --
                                     ---------    -----------    -----------    ------------    ---------

  Total income and
   contributions .................      87,033        523,912        816,006       1,202,767       86,155
                                     ---------    -----------    -----------    ------------    ---------

Net interfund transfers ..........     (47,098)      (401,387)       341,380       4,321,992     (148,928)
                                     ---------    -----------    -----------    ------------    ---------

  Distributions ..................       7,325        343,832        234,611       3,836,816       46,539
                                     ---------    -----------    -----------    ------------    ---------

Net change in net assets
 available for benefits ..........      32,610       (221,307)       922,775       1,687,943     (109,312)

Assets transferred to
 another plan ....................    (167,043)    (2,295,582)    (2,519,905)     (8,251,803)    (173,185)

Net assets available for benefits:
  Beginning of year ..............     604,321      5,507,309      4,787,468      19,196,152      572,551
                                     ---------    -----------    -----------    ------------    ---------

  End of year ....................   $ 469,888    $ 2,990,420    $ 3,190,338    $ 12,632,292    $ 290,054
                                     =========    ===========    ===========    ============    =========

<PAGE>
<CAPTION>
                                         Fund Information (Continued)
                                             Common Stock Funds
                                     ------------------------------------
                                                   Halliburton/    Cash
                                          NL         Tremont       Fund          Total
                                     -----------   ------------   -------     -----------

<S>                                  <C>            <C>          <C>         <C>
Investment income:
  Dividend income:
    NL Industries, Inc. ..........   $    13,803    $    --      $   --      $     13,803
    Halliburton Company ..........          --          1,239        --             1,239
    Dresser Industries ...........          --          6,057        --             6,057
    Tremont Corporation ..........          --            453        --               453
    Other ........................          --           --          --           739,174
  Interest income ................          --           --        (8,895)        994,051
                                     -----------    ---------    --------    ------------

  Total investment income ........        13,803        7,749      (8,895)      1,754,777
                                     -----------    ---------    --------    ------------

Net appreciation
 (depreciation) in the
 fair value of investments .......       672,669     (146,054)       --         2,143,148
                                     -----------    ---------    --------    ------------

Contributions:
  Participants ...................        74,125         --       (44,594)        664,443
  Employer .......................        45,020         --         1,370         599,899
                                     -----------    ---------    --------    ------------

  Total contributions ............       119,145         --       (43,224)      1,264,342
                                     -----------    ---------    --------    ------------

  Total income and
   contributions .................       805,617     (138,305)    (52,119)      5,162,267
                                     -----------    ---------    --------    ------------

Net interfund transfers ..........    (1,373,683)    (133,844)       --              --
                                     -----------    ---------    --------    ------------

  Distributions ..................        35,384        5,434      15,554       4,812,063
                                     -----------    ---------    --------    ------------

Net change in net assets
 available for benefits ..........      (603,450)    (277,583)    (67,673)        350,204

Assets transferred to
 another plan ....................      (409,376)        --          --       (17,584,967)

Net assets available for benefits:
  Beginning of year ..............     3,041,977      641,313      67,673      43,588,098
                                     -----------    ---------    --------    ------------

  End of year ....................   $ 2,029,151    $ 363,730    $   --      $ 26,353,335
                                     ===========    =========    ========    ============
</TABLE>




                See accompanying notes to financial statements.
                                    F-10


<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN

                        NOTES TO FINANCIAL STATEMENTS


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

      The financial  statements of the NL Industries,  Inc.  Retirement  Savings
Plan (the "Plan")  have been  prepared in  accordance  with  generally  accepted
accounting principles.  The following is a summary of the significant accounting
policies followed by the Plan.

INVESTMENTS

      Investments  are recorded at fair value based upon the quoted market price
reported on the last trading day of the period for those securities  listed on a
national securities  exchange.  Listed securities for which no sale was reported
on that  date are  valued  at the mean  between  the last  reported  bid and ask
prices.  Short-term investments are stated at fair value.

      Purchases and sales of  investments  are reflected on a trade-date  basis.
Gains or  losses on sales of  securities  are based on  average  cost.  The Plan
presents in the statements of changes in net assets  available for plan benefits
the net appreciation  (depreciation)  in the fair value of its investments which
consists  of the  realized  gains  or  losses  and the  unrealized  appreciation
(depreciation) on those investments.

CONTRIBUTIONS

      Contributions from employees are recorded in the period the employer makes
payroll deductions from Plan participants.  Employer contributions,  if any, are
accrued at the end of each year and are received in the subsequent year.

INVESTMENT INCOME

      Income  from  investments  is  recorded  as  earned on an  accrual  basis.
Dividend income is recorded at the ex-dividend date.

TERMINATION OF PLAN

      Although it has not expressed any intent to do so, NL Industries, Inc. has
the right under the Plan to discontinue  contributions and to terminate the Plan
at any time subject to penalties  set forth in the  Employee  Retirement  Income
Security  Act of  1974  ("ERISA").  In the  event  of such a  discontinuance  or
termination  of the Plan,  the net assets of the Plan would be  allocated to the
Plan  participants as prescribed by the Plan document,  ERISA,  and the Internal
Revenue Code.


                                    F-11

<PAGE>



MANAGEMENT'S ESTIMATES

      The  preparation  of financial  statements  in conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect  the  reported  amounts of net  assets  available  for
benefits  at the date of the  financial  statements,  the  changes in net assets
available for benefits  during the reporting  period and, when  applicable,  the
disclosures  of contingent  assets and  liabilities at the date of the financial
statements.  Actual results could differ from those estimates.

NOTE 2 - PLAN DESCRIPTION:

      The Plan's  principal  objective  is to provide  eligible  employees of NL
Industries, Inc. and its U.S. subsidiaries (the "Company") with a convenient way
to save on a regular and long-term  basis.  The majority of the  Company's  U.S.
employees are eligible to  voluntarily  participate in the Plan after six months
of  employment.  At  December  31,  1998,  there  were  68  active  participants
(participants  currently  employed by the Company)  and 635 total  participants.
Active  participants may make basic  contributions of between 0% and 8% of their
eligible  compensation.  Basic  contributions  may consist of a  combination  of
pre-tax and after-tax earnings.  Generally,  pre-tax  contributions are excluded
from  the  employee's  taxable  income  until  they  are  distributed.  Eligible
employees  that have elected to make the maximum  basic  contribution  of 8% may
also make a supplemental pre-tax or after-tax  contribution of between 1% and 4%
of their eligible compensation.

      The specialty chemical business of Rheox, Inc., a wholly-owned subsidiary
of the Company, was sold to Elementis plc in January 1998 and $18 million of the
Plan's assets were distributed to Elementis America Inc. Rheox Inc. Retirement
Savings Plan.

      In accordance with the Tax Reform Act of 1986, participants are limited in
the  amount of salary  reduction  contributions  which they may make to the Plan
under Section  402(g) of the Internal  Revenue Code ($10,000  annual maximum for
1998).  Highly compensated  participants may be required to adjust the amount of
their contributions in order to permit the Plan to satisfy the nondiscrimination
requirements of Sections 401(k) and 401(m) of the Internal Revenue Code.

      The Company contributes a discretionary amount of matching  contributions,
determined  annually,  based upon the  attainment  of certain  operating  income
target levels approved by the Management, Development and Compensation Committee
of the Board of Directors of the Company. The employer match applies only to the
employee's basic contributions.

      On March 31, 1996, the defined  benefit plan for salaried  employees of NL
Industries, Inc. was amended and the pension benefits frozen for the majority of
the Company's U.S.  employees.  Effective  April 1, 1996,  every employee who is
eligible to participate in the Plan will receive an annual contribution to their
investment  account  of  3% of  their  eligible  compensation,  subject  to  IRS
limitations on eligible  compensation,  which currently is $160,000. The Company
will make this contribution for each eligible employee regardless of whether the

                                    F-12

<PAGE>



employee elects to otherwise  participate in the Plan.  This  contribution is in
addition to the Company's discretionary matching contribution described above.

      Employer  contributions  are  fully  vested  upon  death,  retirement,  or
disability, as provided in the Plan. A participant with less than three years of
service is 0% vested in employer contributions, 50% vested following three years
of service,  75% vested  following four years of service and fully vested in all
employer contributions following five years of service.  Forfeitures of employer
contributions may occur if a participant terminates employment prior to the full
vesting period or if a participant  or  beneficiary,  to whom a distribution  is
payable,  cannot  be  located  within  five  years  of the  date on  which  such
distribution  became  payable.  Forfeitures  were  $4,068 in 1997 and $18,015 in
1998.  Amounts  forfeited  are used in the following  order:  (i) to restore the
accounts  of   reemployed   participants,   (ii)  to  restore  the  accounts  of
participants or  beneficiaries  who apply for forfeited  benefits,  and (iii) to
reduce employer contributions.

      Merrill  Lynch Trust Company  ("Merrill  Lynch" or "ML") serves as trustee
for the Plan.

      Employees  may elect to have their own  contributions  invested  in one or
more funds, whose investment objectives are as follows:


                                                                   Number of
                                                                participants at
                                                                  December 31,
                                                               -----------------
                                                               1997        1998
                                                               ----        ----

MFS EMERGING GROWTH FUND - CLASS A SHARES - managed with        121         62
the objective of providing long-term growth of capital by
investing primarily in common stocks of small and medium-
sized companies that are early in their life cycle but
which have the potential to become major enterprises.

TEMPLETON WORLD FUND - CLASS I SHARES - managed with the         98         44
objective of seeking long-term capital growth by
investing in securities of companies or governments
located throughout the world.  The fund's portfolio is
invested in securities of both U.S. and foreign issuers.

AIM INTERNATIONAL EQUITY FUND - CLASS A SHARES - managed         73         37
with the objective of seeking long-term return of capital
by investing in a diversified portfolio of international
equity securities.



                                    F-13

<PAGE>
                                                                   Number of
                                                                participants at
                                                                  December 31,
                                                               -----------------
                                                               1997        1998
                                                               ----        ----

AIM VALUE FUND - CLASS A SHARES - managed with the              111         58
objective of achieving long-term growth of capital by
investing primarily in equity securities judged to be
undervalued relative to appraisals of the current or
projected earnings of the companies issuing the
securities, or relative to current market values of
assets owned by the companies issuing the securities or
relative to the equity market generally.  Income is a
secondary objective.

MFS GOVERNMENT SECURITIES FUND - CLASS A SHARES - managed        49         27
with the objective of providing current income and
preservation of principal by investing in Government
Securities and by investing in obligations that are fully
collateralized or otherwise fully secured by Government
Securities.

MERRILL LYNCH EQUITY INDEX TRUST - managed with the              87         46
objective of approximating the total return of the
Standard & Poor's 500 Composite Stock Index.  This index
is a means to measure the performance of a broad base of
large U.S. corporations.

MERRILL LYNCH GLOBAL ALLOCATION FUND, INC. - CLASS A             78         38
SHARES - managed with the objective of seeking a high
total  investment   return,   consistent  with  the  prudent
risk,   through  a fully-managed investment policy utilizing
United States and foreign equity, debt and money market
securities the combination of which will be varied from time
to time both with  respect  to types of  securities  and
markets  in  response  to changing market and economic trends.

MERRILL LYNCH FEDERAL SECURITIES TRUST - CLASS D SHARES -        97         72
managed with the objective of seeking a high current
return through investments in U.S. government and
government agency securities.

MERRILL LYNCH CAPITAL FUND, INC. - CLASS A SHARES -             200         98
managed with the objective of seeking the highest total
investment return consistent with prudent risk, investing
in equity, debt and convertible securities.

MERRILL LYNCH BASIC VALUE FUND, INC. - CLASS A SHARES -         184         94
managed with the objective of seeking capital
appreciation and, secondarily, income.



                                    F-14

<PAGE>
                                                                   Number of
                                                                participants at
                                                                  December 31,
                                                               -----------------
                                                               1997        1998
                                                               ----        ----

MERRILL LYNCH RETIREMENT PRESERVATION TRUST - managed           350        300
with the objective of providing preservation of capital,
liquidity and current income through investments
primarily in Guaranteed Investment Contracts.

NL STOCK FUND - invested in NL common stock.                    478        377


      In addition to the funds listed above, the Halliburton/Tremont  Stock Fund
holds  investments in Halliburton  for 44 participants  and Tremont  Corporation
common  stock for 35  participants.  Investments  in the  Merrill  Lynch  Global
Holdings  Fund,  with 22  participants,  were frozen in 1996.  Contributions  or
transfers into the  Halliburton/Tremont  Stock Fund and the Merrill Lynch Global
Holdings Fund are no longer allowed.

      Prior  to the  investment  in  securities  of a type  consistent  with the
objectives of any fund,  cash may be  temporarily  invested in  securities  with
maturities of less than one year issued or guaranteed by the U.S.  government or
any agency or instrumentality thereof or deposited in a bank savings account.

      Interfund  transfers may be made daily,  except that only one transfer per
participant  per  quarter  may  affect  amounts in the NL Stock  Fund.  Only one
transfer is permitted out of the Halliburton/Tremont  Stock Fund which must be a
transfer of the total value of the participant's account in that fund.

      Distributions  to  employees  may  occur  during  active  service  or upon
termination and under prescribed circumstances. Distributions may be in the form
of lump sums, installments, annuities, or combinations thereof, or distributions
of employer securities.

      The Company bears the responsibility of all administrative expenses of the
Plan.


                                    F-15

<PAGE>



NOTE 3 - INVESTMENTS:

      The historical  cost and fair value of each of the investments at December
31, 1997 and 1998 were as follows:

<TABLE>
<CAPTION>

                                                           1997                             1998
                                              ------------------------------  -----------------------------
                                                Historical                     HISTORICAL
Fund description                                   cost        Fair value        COST         FAIR VALUE
- ----------------                              ------------    -----------     -----------     -----------

<S>                                           <C>             <C>             <C>             <C>
MFS Emerging Growth Fund - Class A Shares     $ 1,534,538     $ 1,752,287     $   970,670     $ 1,278,402

Templeton World Fund - Class I Shares ...       1,740,237       1,709,815         651,335         615,177

AIM International Equity Fund - Class A
 Shares .................................         332,296         358,685         238,380         267,444

AIM Value Fund - Class A Shares .........       2,314,305       2,339,828         856,310       1,027,619

MFS Government Securities Fund - Class A
 Shares .................................         400,192         412,430         259,186         271,136

Merrill Lynch Equity Index Trust ........       1,179,269       1,471,539         321,945         462,080

Merrill Lynch Global Allocation Fund,
 Inc. - Class A Shares ..................         605,829         581,012         287,551         249,476

Merrill Lynch Federal Securities Trust -
 Class D Shares .........................         552,463         559,444         435,316         440,463

Merrill Lynch Capital Fund, Inc. -
 Class A Shares .........................       4,381,559       5,280,559       2,490,537       2,918,680

Merrill Lynch Basic Value Fund, Inc. -
 Class A Shares .........................       3,490,890       4,553,826       2,396,955       3,053,911

Merrill Lynch Retirement Preservation
 Trust ..................................      18,770,319      18,770,319      12,532,499      12,532,499

Merrill Lynch Global Holdings, Inc. -
 Class A Shares .........................         555,820         572,120         274,766         290,054

NL Stock Fund ...........................       2,768,830       2,922,905       1,915,419       1,984,132

Halliburton/Tremont Stock Fund:
  Halliburton Common Stock ..............         130,237         510,016         111,251         292,779
  Tremont Common Stock ..................          20,693         131,297          18,061          70,951
                                              -----------     -----------     -----------     -----------

                                              $38,777,477     $41,926,082     $23,760,181     $25,754,803
                                              ===========     ===========     ===========     ===========
</TABLE>

      At June 4, 1999,  the market  value of the shares of NL,  Halliburton  and
Tremont  stock held at December 31, 1998 was  $1,599,599,  $424,962 and $38,943,
respectively.

CONCENTRATION OF CREDIT RISK

      The  Plan's  assets  are  invested  principally  in  common  stock  of NL,
Halliburton and Tremont, and with investment funds managed by (i) Merrill Lynch,
ii) Massachusetts  Financial Services ("MFS"), iii) AIM Advisors,  Inc., and iv)
Templeton  Global  Advisors  Limited.  At December 31,  1998,  77% of the Plan's
investments were managed by Merrill Lynch.

                                    F-16

<PAGE>


NOTE 4 - RELATED PARTY TRANSACTIONS:

      The NL Stock Fund and the  Halliburton/Tremont  Stock  Fund  invest in the
common stock of NL and Tremont,  both of which entities are  considered  related
parties.  The activity of these securities for the years ended December 31, 1997
and 1998 was as follows:

<TABLE>
<CAPTION>

                                                       Sales and
                                                      distributions,    Realized
                                          Purchases     at cost           gain
                                          ---------   --------------    --------

<S>                                       <C>           <C>             <C>
Year ended December 31, 1997:
  NL common stock ..................      $407,357      $  429,237      $ 70,581
  Tremont common stock .............          --             1,908         7,101

YEAR ENDED DECEMBER 31, 1998:
  NL COMMON STOCK ..................       302,532       1,155,944       758,178
  TREMONT COMMON STOCK .............           453           3,085        18,782
</TABLE>

NOTE 5 - TAX STATUS:

      The Plan, as amended,  is designed to  constitute a qualified  trust under
Sections 401(a) and 401(k) of the Internal Revenue Code of 1986, as amended (the
"Code");  as such the Plan is  exempt  from  federal  income  tax,  and  amounts
contributed  by the  Company  will  not be taxed to the  participant  until  the
participant receives a distribution from the Plan.

      The Plan has  received  a  favorable  determination  as of March 5,  1998,
indicating it is a "Qualified  Plan" under the  requirements  of Sections 401(a)
and 401(k) of the Code and is qualified for favorable tax treatment.



                                    F-17

<PAGE>



                            SUPPLEMENTAL SCHEDULES


<PAGE>



                 NL INDUSTRIES, INC. RETIREMENT SAVINGS PLAN

          ITEM 27a - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES

                              December 31, 1998

                    Employer Identification No. 13-5267260

                                 Plan No. 003
<TABLE>
<CAPTION>


                                                         Cost       Fair value
                                                     -----------   -----------

<S>                                                  <C>           <C>
   MFS Emerging Growth Fund - Class A Shares         $   970,670   $ 1,278,402

   Templeton World Fund - Class I Shares                 651,335       615,177

   AIM International Equity Fund - Class A Shares        238,380       267,444

   AIM Value Fund - Class A Shares                       856,310     1,027,619

   MFS Government Securities Fund - Class A Shares       259,186       271,136

*  Merrill Lynch Equity Index Trust                      321,945       462,080

*  Merrill Lynch Global Allocation Fund, Inc.-
    Class A Shares                                       287,551       249,476

*  Merrill Lynch Federal Securities Trust -
    Class D Shares                                       435,316       440,463

*  Merrill Lynch Capital Fund, Inc. -
    Class A shares                                     2,490,537     2,918,680

*  Merrill Lynch Basic Value Fund, Inc. -
    Class A shares                                     2,396,955     3,053,911

*  Merrill Lynch Retirement Preservation Trust        12,532,499    12,532,499

*  Merrill Lynch Global Holdings, Inc. -
    Class A shares                                       274,766       290,054


*  NL Stock Fund - Common Stock                        1,915,419     1,984,132

   Tremont/Halliburton Stock Fund -
    Common Stock:
*    Tremont Corporation                                  18,061        70,951
     Halliburton Company                                 111,251       292,779
                                                     -----------   -----------

                                                     $23,760,181   $25,754,803
                                                     ===========   ===========
</TABLE>

Note:   Cost is determined based on historical cost.  Gains and losses on
        sales of investments are calculated based on average cost.

*  Investment in a "Party-in-interest" entity, as defined by ERISA.

                                    F-18

<PAGE>



                             NL INDUSTRIES, INC.
                           RETIREMENT SAVINGS PLAN
                 ITEM 27d - SCHEDULE OF REPORTABLE TRANSACTIONS
                          Year ended December 31, 1998
                    Employer Identification No. 13-5267260
                                 Plan No. 003

<TABLE>
<CAPTION>

                                                                                                  Fair value
                                                                                                  of asset on
                             Number of       Purchase         Selling           Cost of           transaction     Net gain
Description of Asset        Transactions      price            price             asset               date          (loss)
- --------------------        ------------   ----------       -----------       -----------         ------------    --------

<S>                              <C>       <C>              <C>               <C>               <C>               <C>
Merrill Lynch Retirement
 Preservation Trust:
  Purchases ..............       168       $7,031,489       $      --         $ 7,031,489       $ 7,031,489       $   --
  Sales ..................        99             --          13,223,361        13,223,361        13,223,361           --

Merrill Lynch Equity Index
 Trust:
  Purchases ..............        74        1,113,369              --           1,113,369         1,113,369           --
  Sales ..................        36             --           2,456,058         1,970,686         2,456,058        485,372

AIM Value Fund:
  Purchases ..............        71          629,078              --             629,078           629,078           --
  Sales ..................        36             --           2,361,483         2,087,073         2,361,483        274,410

Merrill Lynch Capital Fund
 Class A:
  Purchases ..............        56          987,802              --             987,802           987,802           --
  Sales ..................        56             --           3,471,845         2,814,879         3,471,845        656,966

Merrill Lynch Basic Value
 Fund Class A:
  Purchases ..............        77        1,484,877              --           1,484,877         1,484,877           --
  Sales ..................        50             --           3,227,446         2,514,930         3,227,446        712,516


</TABLE>



                                    F-19

<PAGE>


                                                                     EXHIBIT I




                      CONSENT OF INDEPENDENT ACCOUNTANTS



We consent to the incorporation by reference in the:

  (i)    Registration Statement No. 2-98713 on Form S-8 and related Prospectus
         with respect to the 1985 Long Term Performance Incentive Plan of NL
         Industries, Inc.;

  (ii)   Registration Statement No. 33-25913 on Form S-8 and related
         Prospectus with respect to the Savings Plan for Employees of NL
         Industries, Inc.;

  (iii)  Registration Statement No. 33-48145 on Form S-8 and related
         Prospectus with respect to the 1992 Non-Employee Director Stock
         Option Plan of NL Industries, Inc.; and

  (iv)   Registration Statement No. 333-65817 on Form S-8 and related
         Prospectus with respect to the NL Industries, Inc. 1998 Long-Term
         Incentive Plan.

of our report which is dated June 4, 1999,  on our audits of the  statements  of
net assets available for benefits of the NL Industries,  Inc. Retirement Savings
Plan as of December 31, 1997 and 1998 and the related  statements  of changes in
net assets  available  for  benefits  for the years then ended,  which report is
included in this Annual Report on Form 11-K.







                                    PricewaterhouseCoopers LLP





Houston, Texas
June 28, 1999






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