Document:

Exhibit 10.5

                       INTERCORPORATE SERVICES AGREEMENT

      INTERCORPORATE  SERVICES AGREEMENT  effective as of January 1, 2000 by and
between  Tremont  Corporation  ("Tremont"),  a  Delaware  corporation,   and  NL
Industries, Inc. ("NL"), a New Jersey corporation.

      WHEREAS,  Tremont desires that NL provide certain services to Tremont, and
NL is willing to provide such services to Tremont  pursuant to the terms of this
Agreement.

      NOW,  THEREFORE,  in  consideration of the premises and promises set forth
herein, the parties to this Agreement agree as follows:

      1.  Services  Provided.  NL will make  available to Tremont the  following
services (the "Services"):

            (a)   certain administration and management services with respect to
                  Tremont's insurance and risk management needs, including:

                  (i)   management of claims (including insured and
                        self-insured workers compensation and liability
                        claims);
                  (ii)  budgeting and related activities;
                  (iii) administration of Tremont's captive insurance
                        company;
                  (iv)  coordination of property loss control program;
                        and
                  (v)   administration of Tremont's insurance program, excluding
                        all employee benefit and welfare related programs.

            (b)   certain administration and management services with respect to
                  Tremont's real properties and interests;

            (c)   consultation  and  assistance  in  performing  internal  audit
                  projects, as requested; and

            (d)   consultation    and   assistance   in   tax   management   and
                  administration, including, without limitation, preparation and
                  filing  of  tax  returns,   tax  reporting,   examinations  by
                  government authorities and tax planning.

<PAGE>

      2. Fees for Services and  Reimbursement  of Expenses.  During the Term (as
defined  below) of this  Agreement,  Tremont  shall  pay to NL an annual  fee of
$77,700 (the "Annual Fee") for the Services  described in paragraphs 1(a), 1(b),
and  1(d)  above  payable  in  quarterly   installments  of  $19,425,  plus  all
out-of-pocket  expenses  incurred in  connection  with the  performance  of such
Services. In addition, Tremont will, within thirty (30) days after receipt of an
invoice (such invoices to occur no more  frequently  than once per month) pay to
NL an amount  equal to the  product  of $500  multiplied  by the  number of days
devoted by NL's internal auditors to providing  Services  described in paragraph
1(c) above times the number of internal  auditors  providing  such Services plus
all  out-of-pocket  expenses  incurred  in the  performance  of  such  Services.
Notwithstanding the foregoing, in the event that Tremont determines, in its sole
discretion,  that it no longer desires certain of the Services or NL determines,
in its sole  discretion,  that it no longer  desires to  provide  certain of the
Services, then Tremont or NL, as appropriate, shall provide the other party with
a thirty (30) day prior written notice of  cancellation  describing the Services
to be  terminated  or  discontinued  and Tremont  and NL during such  ninety-day
period shall agree to a pro-rata  reduction of the fees due  hereunder  for such
terminated or discontinued Services.

      3. Limitation of Liability. In providing Services hereunder, NL shall have
a duty to act, and to cause its agents to act, in a reasonably  prudent  manner,
but  neither  NL nor any  officer,  director,  employee  or agent of NL shall be
liable to Tremont or its  subsidiaries  for any error of  judgment or mistake of
law or for any loss incurred by Tremont or its  subsidiaries  in connection with
the  matters to which  this  Agreement  relates,  except a loss  resulting  from
willful  misfeasance,  bad faith or gross  negligence  on the part of NL or from
NL's reckless disregard of obligations and duties under this Agreement.

      4.  Indemnification  of NL by Tremont.  Tremont  shall  indemnify and hold
harmless NL, its  subsidiaries  and their  respective  officers,  directors  and
employees  from and against any and all losses,  liabilities,  claims,  damages,
costs and expenses (including  reasonable  attorneys' fees and other expenses of
litigation) to which such party may become subject  arising out of the provision
by NL to Tremont and its subsidiaries of any of the Services, provided that such
indemnity  shall not protect any such party  against any liability to which such
person would otherwise by subject by reason of willful  misfeasance,  bad faith,
gross negligence or reckless disregard of obligations and duties hereunder.

      5. Further Assurance. Each of the parties will make, execute,  acknowledge
and  deliver  such  other  instruments  and  documents,  and take all such other
actions,  as the other party may  reasonably  request and as may  reasonably  be
required in order to effectuate  the purposes of this Agreement and to carry out
the terms hereof.

<PAGE>

      6. Notices. All communications  hereunder shall be in writing and shall be
addressed to:

            If to NL:         NL Industries, Inc.
                              16825 Northchase Drive, Suite 1200
                              Houston, Texas 77060
                              Attention: General Counsel

            If to Tremont:    Tremont Corporation
                              1999 Broadway, Suite 4300
                              Denver, Colorado 80202
                              Attention: General Counsel

            or such  other  address  as the  parties  shall  have  specified  in
writing.

      7. Amendment and Modification.  Neither this Agreement nor any item hereof
may be changed,  waived,  discharged  or  terminated  other than by agreement in
writing signed by the parties hereto.

      8.  Successors and Assigns.  This Agreement  shall inure to the benefit of
and be binding upon the respective successors and assigns of the parties hereto,
provided that this Agreement may not be assigned by either of the parties hereto
without the prior written consent of the other party.

      9.  Miscellaneous.  The  headings  contained  in  this  Agreement  are for
reference  purposes  only  and  shall  not  affect  in any  way the  meaning  or
interpretation  of  this  Agreement.   This  Agreement  constitutes  the  entire
agreement, and supersedes all prior agreements and understandings,  both written
and oral,  between the parties with respect to the subject matter  hereof.  This
Agreement  may be executed in one or more  counterparts,  each of which shall be
deemed an original,  and all of which together shall constitute one and the same
instrument.  This  Agreement  shall  be  governed  in  all  respects,  including
validity, interpretation and affect, by the laws of the State of Texas.

      10. Term of Agreement.  This Agreement shall be effective as of January 1,
2000,  and shall remain in effect for a term of one year until December 31, 2000
(the  "Term");  provided,   however,  the  Agreement  shall  be  extended  on  a
quarter-to-quarter  basis  after  the  expiration  of the  Term  unless  written
notification  is given by either  party thirty (30) days in advance of the first
day of each  successive  quarter or unless it is  terminated  or superseded by a
subsequent  written  agreement of the parties hereto.  Upon such  termination or
upon the  expiration  of this  Agreement,  the parties'  rights and  obligations
hereunder  shall  cease  and  terminate   except  with  respect  to  rights  and
obligations arising on or prior to the date of expiration or termination and the
rights and obligations arising under paragraph 4 above.

<PAGE>

      IN WITNESS  WHEREOF,  the parties have duly executed this  Agreement as of
the 12th day of May, 2000,  which Agreement will be deemed to be effective as of
January 1, 2000.

                               NL INDUSTRIES, INC.

                                    By:  /s/ Robert D. Hardy
                                         Robert D. Hardy
                                         Vice President

                               TREMONT CORPORATION

                                    By:  /s/ Mark A. Wallace
                                         Mark A. Wallace
                                         Vice PresidentExhibit 10.6

                     INTERCORPORATE SERVICES AGREEMENT

      This INTERCORPORATE SERVICES AGREEMENT (the "Agreement"),  effective as of
January 1, 2000,  amends and  supersedes  that certain  Intercorporate  Services
Agreement  effective  as of January 1, 1999 between NL  INDUSTRIES,  INC., a New
Jersey corporation ("NL"), and COMPX INTERNATIONAL INC., a Delaware  corporation
("CompX").

                                   Recitals

      A. NL provides  CompX (i) certain  occupancy and related  office  services
(the "Occupancy and Related Office Services"),  which services include,  without
limitation,  office  space  that  CompX's  personnel  currently  occupy  at NL's
corporate offices at Two Greenspoint  Plaza, 16825 Northchase Drive, Suite 1200,
Houston, Texas and mail, telecommunication,  copying and other reasonable office
services related to such occupancy and (ii) certain insurance,  risk management,
loss control, computer support, and internal audit services as set forth in this
Agreement.

      B. The terms of this  Agreement are no less  favorable to CompX than could
otherwise be obtained from a third party for comparable services.

      C. CompX desires to continue  receiving the services presently provided by
NL and  affiliates  of NL and NL is willing to continue to provide such services
under the terms of this Agreement.

                                  Agreement

      For and in  consideration  of the  mutual  premises,  representations  and
covenants herein contained, the parties hereto mutually agree as follows:

      Section 1.  Services  Provided.  NL agrees to make  available to CompX the
following  services (the  "Services") to be rendered by the internal staff of NL
and affiliates of NL:

      (a) the Occupancy and Related  Office  Services (as outlined in Attachment
          1);

      (b) certain administration and management services with respect to CompX's
          insurance and risk management needs, including:

                  (i)   management  of  claims  (including   insured  and  self-
                        insured workers compensation and liability claims);

                  (ii)  budgeting and related activities;

                  (iii) coordination of property loss control program; and

                  (iv)  administration of CompX's insurance  program,  excluding
                        all employee benefit and welfare related programs;

<PAGE>

      (c) consultation and assistance in performing internal audit projects,  as
          requested;

      (d) computer related support services;

      (e) such other  services as may be requested by CompX or deemed  necessary
          and proper from time to time; and

      (f) use of corporate aircraft.

      Section 2. Miscellaneous  Services. It is the intent of the parties hereto
that NL provide only the Services  requested by CompX in connection with routine
administrative functions related to the ongoing operations of CompX and not with
respect to special projects,  including corporate investments,  acquisitions and
divestitures.  The parties  hereto  contemplate  that the  Services  rendered in
connection with the conduct of CompX's business will be on a scale comparable to
that existing on the effective date of this Agreement,  and that adjustments may
be required  to the terms of this  Agreement  in the event of special  projects,
including  corporate  investments,  acquisitions  and  divestitures.  CompX will
continue  to bear all other  costs  required  for  outside  services,  and it is
expressly  understood  that NL assumes no liability for any expenses or services
other than those stated in Section 1.

      Section 3. Fee for  Services.  During the Term (as  defined  below) of the
Agreement,  CompX  shall pay to NL an annual fee of  $132,800  for the  Services
described  in  subsections  1(a),  1(b),  and 1(e) above  payable  in  quarterly
installments of $33,200 plus all  out-of-pocket  expenses incurred in connection
with the  performance of such Services  described in subsections  1(b) and 1(e).
CompX will pay to NL within  thirty (30) days after  receipt of an invoice (such
invoices to occur no more frequently than once per month) an amount equal to the
product  of $500  multiplied  by the  number of days  devoted  by NL's  internal
auditors to  providing  Services  described in  subsection  1(c) above times the
number of internal  auditors  providing  such Services  plus all out-of-  pocket
expenses  incurred in their  performance of such Services.  CompX will pay to NL
within  thirty  (30) days after  receipt of an invoice,  an amount  equal to the
product of $50  multiplied  by the number of hours  devoted by NL's  information
systems personnel  providing such Services described in subsection 1(d) plus all
out-of-pocket  expenses incurred in the performance of such Services.  Regarding
Services  described in subsection  1(f), CompX will pay to NL within thirty (30)
days  after  receipt of an  invoice  an amount  equal to  CompX's  share of NL's
corporate  aircraft  expenses  which  includes  CompX's  share  of  the  monthly
management  fee (computed on a per hour basis) and actual flight hour costs at a
rate of $1,767  per hour  (subject  to  annual  escalation)  plus fuel  variable
charges,  segment fees and excise taxes.  Notwithstanding the foregoing,  in the
event that CompX determines,  in its sole discretion,  that it no longer desires
certain of the Services or NL  determines,  in its sole  discretion,  that it no
longer  desires  to  provide  certain  of the  Services,  then  CompX or NL,  as
appropriate,  shall provide the other party with a thirty (30) day prior written
notice of cancellation  describing the Services to be terminated or discontinued
and  CompX  and NL during  such  thirty-day  period  shall  agree to a  pro-rata
reduction  of the  fees  due  hereunder  for  such  terminated  or  discontinued
Services.

                                    -2-

<PAGE>

      Section 4. Original  Term.  Subject to the provisions of Section 5 hereof,
the original  term of this  Agreement  shall be from January 1, 2000 to December
31, 2000.

      Section  5.   Extensions.   This   Agreement   shall  be   extended  on  a
quarter-to-quarter  basis  after the  expiration  of its  original  term  unless
written  notification is given by NL or CompX thirty (30) days in advance of the
first day of each successive  quarter or unless it is superseded by a subsequent
written agreement of the parties hereto.

      Section 6. Limitation of Liability.  In providing its Services  hereunder,
NL shall  have a duty to act,  and to cause its agents to act,  in a  reasonably
prudent manner, but neither NL nor any officer,  director,  employee or agent of
NL or its  affiliates  shall be liable to CompX  for any  error of  judgment  or
mistake of law or for any loss incurred by CompX in  connection  with the matter
to  which  this  Agreement  relates,   except  a  loss  resulting  from  willful
misfeasance, bad faith or gross negligence on the part of NL.

      Section 7.  Indemnification of NL by CompX. CompX shall indemnify and hold
harmless  NL,  its  affiliates  and their  respective  officers,  directors  and
employees  from and against any and all losses,  liabilities,  claims,  damages,
costs and expenses (including  attorneys' fees and other expenses of litigation)
to which NL or any such person may become subject to arising out of the Services
provided  by NL to CompX  hereunder,  provided  that  such  indemnity  shall not
protect any person against any liability to which such person would otherwise be
subject to by reason of willful  misfeasance,  bad faith or gross  negligence on
the part of such person.

      Section 8. Further  Assurances.  Each of the parties  will make,  execute,
acknowledge and deliver such other instruments and documents,  and take all such
other actions,  as the other party may reasonably  request and as may reasonably
be required in order to effectuate  the purposes of this  Agreement and to carry
out the terms hereof.

      Section 9. Notices.  All communications  hereunder shall be in writing and
shall be addressed to:

            If to NL:         NL Industries, Inc.
                              16825 Northchase Drive, Suite 1200
                              Houston, Texas 77060
                              Attention: General Counsel

            If to COMPX:      CompX International Inc.
                              16825 Northchase Drive, Suite 1200
                              Houston, Texas 77060
                              Attention: Chairman of the Board

or such other address as the parties shall have specified in writing.

                                    -3-

<PAGE>

      Section 10.  Amendment and  Modification.  Neither this  Agreement nor any
term hereof may be  changed,  waived,  discharged  or  terminated  other than by
agreement in writing signed by the parties hereto.

      Section 11.  Successors and Assigns.  This Agreement shall be binding upon
and inure to the  benefit of NL and CompX and their  respective  successors  and
assigns,  except that neither  party may assign its rights under this  Agreement
without the prior written consent of the other party.

      Section 12.  Governing  Law.  This  Agreement  shall be  governed  by, and
construed and interpreted in accordance with, the laws of the state of Texas.

      IN WITNESS  WHEREOF,  the parties  hereto have caused this Agreement to be
duly executed and delivered as of the date first above written.

                                        NL INDUSTRIES, INC.

                                        By: /s/ Robert D. Hardy
                                        Robert D. Hardy
                                        Vice President

                                        COMPX INTERNATIONAL INC.

                                        By: /s/ John A. Miller
                                        John A. Miller
                                        Vice President

                                    -4-

<PAGE>

                               Attachment No. 1

                                    A-5

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