UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC  20549

                               ------------------

                                 SCHEDULE 13G/A
                                 (Rule 13d-102)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
          TO RULES 13d-1(b) (c), AND (d) AND AMENDMENTS THERETO FILED
                           PURSUANT TO RULE 13d-2(b)

                               (Amendment No. 6)1

                        TOR Minerals International, Inc.
                        --------------------------------
                                (Name of Issuer)


                     Common Stock, par value $.25 per share
                     --------------------------------------
                         (Title of Class of Securities)

                                   433658101
                                   ---------
                                 (CUSIP Number)


                               December 31, 2003
                               -----------------
            (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

          [ ]  Rule 13d-1(b)
          [ ]  Rule 13d-1(c)
          [x]  Rule 13d-1(d)

---------------------
1   The remainder of this cover page shall be filled out for a reporting
    person's initial filing on this form with respect to the subject class of
    securities, and for any subsequent amendment containing information which
    would alter the disclosures provided in a prior cover page.

    The information required in the remainder of this cover page shall not be
    deemed to be "filed" for the purpose of Section 18 of the Securities
    Exchange Act of 1934 (the "Act") or otherwise subject to the liabilities of
    that section of the Act but shall be subject to all other provisions of the
    Act (however, see the Notes).




CUSIP No.  433658101               SCHEDULE 13G/A             Page 2 of 4 Pages

-------------------------------------------------------------------------------
1.      NAME OF REPORTING PERSONS.
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS  (ENTITIES ONLY)

        The Clark Estates, Inc.
        13-5524538
-------------------------------------------------------------------------------
2.      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                              (a) [ ]
                                                              (b) [X]
--------------------------------------------------------------------------------
3.      SEC USE ONLY
--------------------------------------------------------------------------------
4.      CITIZENSHIP OR PLACE OF ORGANIZATION

        New York
--------------------------------------------------------------------------------

                5.      SOLE VOTING POWER             0
NUMBER OF       ----------------------------------------------------------------
SHARES
BENEFICIALLY    6.      SHARED VOTING POWER           0
OWNED BY
EACH            ----------------------------------------------------------------
REPORTING
PERSON WITH     7.      SOLE DISPOSITIVE POWER        0
--------------------------------------------------------------------------------

                8.      SHARED DISPOSITIVE POWER      0

--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICALLY OWNED BY EACH REPORTING PERSON

     0
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
(SEE INSTRUCTIONS)

[  ]
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

        0.%
--------------------------------------------------------------------------------
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

        CO
--------------------------------------------------------------------------------



CUSIP No.  433658101          SCHEDULE 13G/A                   Page 3 of 4 Pages

Item 1(a).   Name of Issuer:

             TOR Minerals International, Inc.

Item 1(b).   Address of Issuer's Principal Executive Offices:

             722 Burleson Street
             Corpus Christi, Texas  78402

Item 2(a).   Name of Person Filing:

             The Clark Estates, Inc.

Item 2(b).   Address of Principal Business Office or, if None, Residence:

             One Rockefeller Plaza
             31st Floor
             New York, New York  10020

Item 2(c).   Citizenship:

             New York

Item 2(d).   Title of Class of Securities:

             Common Stock, par value $.25 per share

Item 2(e).   CUSIP Number:

             433658101

Item 3.      If This Statement is Filed Pursuant to Section 240.13d-1(b) or
             240.13d-2(b) or (c), Check Whether the Person Filing is a:

             Not Applicable.


Item 4.      Ownership:

      (a)    Amount beneficially owned:  0

      (b)    Percent of class:  0%

      (c)    Number of shares as to which such person has:

             (i)   Sole power to vote or to direct the vote:  0

             (ii)  Shared power to vote or to direct the vote:  0

             (iii) Sole power to dispose or to direct the disposition of:  0

             (iv)  Shared power to dispose or to direct the disposition of:  0




CUSIP No.  433658101            SCHEDULE 13G/A                 Page 4 of 4 Pages


Item 5.  Ownership of Five Percent or Less of a Class:

         If this statement is being filed to report the fact that as of the
         date hereof the reporting person has ceased to be the beneficial
         owner of more than five percent of a class of securities, check the
         following [x].

Item 6.  Ownership of More than Five Percent on Behalf of Another Person.

         Not Applicable.


Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on By the Parent Holding Company or Control
         Person.

         Not Applicable.

Item 8.  Identification and Classification of Members of the Group.

         Not Applicable.

Item 9.  Notice of Dissolution of Group.

         Not Applicable.

Item 10. Certification.

         Not Applicable.



                                   SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.



Dated:  February 13, 2004
                                                THE CLARK ESTATES, INC.

                                                By: /s/ Kevin S. Moore
                                                   ---------------------
                                                   Name:  Kevin S. Moore
                                                   Title:  President