1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D
                               (Amendment No. )*
                                       of
                          Tweedy, Browne Company L.P.


                                  SCHEDULE 13D
                               (Amendment No. )*
                                       of
                               TBK Partners, L.P.


                                  SCHEDULE 13D
                               (Amendment No. )*
                                       of
                           Vanderbilt Partners, L.P.



                   Under the Securities Exchange Act of 1934

                             MATRIX SERVICE COMPANY
                                (Name of Issuer)


                    Common Stock, Par Value $0.01 Per Share
                         (Title of Class of Securities)

                                   576853105
                                 (CUSIP Number)



                                 John D. Spears
                              52 Vanderbilt Avenue
                           New York, New York  10017
                                 (212) 916-0600
                 (Name, Address and Telephone Number of Persons
               Authorized to Receive Notices and Communications)




                                February 9, 1996
            (Date of Event which Required Filing of this Statement)
   2
If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [   ].

Check the following box if a fee is paid with the statement [ X ].  (A fee is
not required only if the reporting person:  (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)

*  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 disclosures provided in a prior cover page.

The information required on 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 ("Act") or otherwise subject to the liabilities of that section of
the Act, but shall be subject to all the provisions of the Act (however, see
the Notes).
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                                  SCHEDULE 13D

CUSIP No. 576853105                                         Page __ of __ Pages
- --------------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
        S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                Tweedy, Browne Company L.P. ("TBC")
- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) / /
                                                                        (b) /X/
- --------------------------------------------------------------------------------
3       SEC USE ONLY

- --------------------------------------------------------------------------------
4       SOURCE OF FUNDS*

                00
- --------------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEMS 2(d) or 2(E)                                               / /
- --------------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
- --------------------------------------------------------------------------------
                7       SOLE VOTING POWER
                                TBC has sole voting power with respect to
                        417,970 shares held in certain TBC accounts (as
                        hereinafter defined). Additionally, certain of the
                        general partners of TBC may be deemed to have sole power
                        to vote certain shares as more fully set forth herein.
  NUMBER OF     ----------------------------------------------------------------
   SHARES       8       SHARED VOTING POWER
BENEFICIALLY
  OWNED BY                      0 shares
    EACH        ----------------------------------------------------------------
 REPORTING      9       SOLE DISPOSITIVE POWER
   PERSON                       0 shares, except that certain of the general
    WITH                partners of TBC may be deemed to have sole power to
                        dispose of certain shares as more fully set forth
                        herein.
                ----------------------------------------------------------------
                10      SHARED DISPOSITIVE POWER
                                458,160 shares held in accounts of TBC (as 
                        hereinafter defined).
- --------------------------------------------------------------------------------
11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                458,160 shares
- --------------------------------------------------------------------------------
12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXLUDES CERTAIN SHARES*
                                                                            / /
- --------------------------------------------------------------------------------
13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                4.93%
- --------------------------------------------------------------------------------
14      TYPE OF REPORTING PERSON*

                BD, IA & PN
- --------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


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                                  SCHEDULE 13D

CUSIP No. 576853105                                         Page __ of __ Pages
- --------------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
        S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                TBK Partners, L.P. ("TBK")   
- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) / /
                                                                        (b) /X/
- --------------------------------------------------------------------------------
3       SEC USE ONLY

- --------------------------------------------------------------------------------
4       SOURCE OF FUNDS*

                WC and BK
- --------------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEMS 2(d) or 2(E)                                               / /
- --------------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
- --------------------------------------------------------------------------------
                7       SOLE VOTING POWER
                                10,000 shares, except that the general partners
                        in TBK, solely by reason of their positions, as such 
                        may be deemed to have shared power to vote these shares.
  NUMBER OF     ----------------------------------------------------------------
   SHARES       8       SHARED VOTING POWER
BENEFICIALLY
  OWNED BY                      0 shares
    EACH        ----------------------------------------------------------------
 REPORTING      9       SOLE DISPOSITIVE POWER
   PERSON                       10,000 shares, except that the general partners,
    WITH                solely by reason of their positions as such, may be
                        deemed to have shared power to vote these shares.
                ----------------------------------------------------------------
                10      SHARED DISPOSITIVE POWER
                                0 shares
- --------------------------------------------------------------------------------
11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                10,000 shares
- --------------------------------------------------------------------------------
12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXLUDES CERTAIN SHARES*
                                                                            / /
- --------------------------------------------------------------------------------
13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                0.11%
- --------------------------------------------------------------------------------
14      TYPE OF REPORTING PERSON*

                PN
- --------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


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                                  SCHEDULE 13D

CUSIP No. 576853105                                         Page 5 of 16 Pages
- --------------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
        S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                Vanderbilt Partners, L.P. ("Vanderbilt")
- --------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) / /
                                                                        (b) /X/
- --------------------------------------------------------------------------------
3       SEC USE ONLY

- --------------------------------------------------------------------------------
4       SOURCE OF FUNDS*

                WC and BK
- --------------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEMS 2(d) or 2(E)                                               / /
- --------------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
- --------------------------------------------------------------------------------
                7       SOLE VOTING POWER
                                12,500 shares, except that the general partners
                        in Vanderbilt, solely by reason of their positions as
                        such, may be deemed to have shared power to vote these
                        shares.
  NUMBER OF     ----------------------------------------------------------------
   SHARES       8       SHARED VOTING POWER
BENEFICIALLY
  OWNED BY                      0 shares
    EACH        ----------------------------------------------------------------
 REPORTING      9       SOLE DISPOSITIVE POWER
   PERSON                       12,500 shares, except that the general partners
    WITH                in Vanderbilt, solely by reason of their positions as
                        such, may be deemed to have shared power to vote these
                        shares.
                ----------------------------------------------------------------
                10      SHARED DISPOSITIVE POWER
                                0 shares
- --------------------------------------------------------------------------------
11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                12,500 shares
- --------------------------------------------------------------------------------
12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXLUDES CERTAIN SHARES*
                                                                            / /
- --------------------------------------------------------------------------------
13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                0.13%
- --------------------------------------------------------------------------------
14      TYPE OF REPORTING PERSON*

                PN
- --------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


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PRELIMINARY NOTE

          This Statement on Schedule 13D is being filed because the filing
persons may be deemed to be members of a group comprised of Tweedy, Browne
Company  L.P. ("TBC"),  TBK Partners, L.P. ("TBK") and Vanderbilt Partners,
L.P. ("Vanderbilt"), which group may be deemed to be the beneficial owner in
the aggregate of in excess of 5% of the Common Stock of Matrix Service Company.
However, the filing of this Schedule 13D  should not be deemed an admission
that TBC, TBK  and Vanderbilt comprise a group within the meaning of Section
13(d)(3) of the Securities and Exchange Act of 1934, as amended (the"Act").

ITEM 1.  SECURITY AND ISSUER

         This Schedule 13D relates to the Common Stock, $0.01 par value (the
"Common Stock"), of Matrix Service Company  (the "Company"), which, to the best
knowledge of the persons filing this Schedule 13D, is a company organized under
the laws of Delaware, with its principal executive offices located at 10701
East Ute Street, Tulsa, Oklahoma 74116.

ITEM 2. IDENTITY AND BACKGROUND

         (a)     The persons filing this Schedule 13D are (i) Tweedy, Browne
Company L.P. ("TBC"), a Delaware limited partnership, (ii) TBK Partners, L.P.
("TBK"), a Delaware limited partnership and (iii) Vanderbilt Partners, L.P.
("Vanderbilt"), a Delaware limited partnership.  Annexed as Exhibit 99.1, which
is incorporated by reference herein, is an agreement among TBC, TBK and
Vanderbilt that this Schedule 13D is filed on behalf of each of them.  The
filing of this Schedule 13D should not be deemed an admission that TBC, TBK and
Vanderbilt comprise a group within the meaning of Section 13(d)(3) of the
Securities Exchange Act of 1934 (the "Act").

         This Schedule 13D contains information regarding shares of Common
Stock that may be deemed to be beneficially owned by TBC.  Such shares are held
in the accounts of various customers of TBC, with respect to which accounts TBC
has investment discretion (the "TBC Accounts"), and with respect to some of
which it has obtained sole or shared voting power.

         The general partners of TBK are Christopher H. Browne, William H.
Browne, Thomas P. Knapp and John D. Spears.  The general partners of TBC and
Vanderbilt are Christopher H. Browne, William H. Browne and John D. Spears
(the "General Partners").   By reason of their positions as such, the general
partners of TBK may be deemed to control TBK and the general partners of TBC
and Vanderbilt may be deemed to control TBC and Vanderbilt, respectively

         (b)     The business address of each of TBC, TBK, Vanderbilt and the
General Partners is 52 Vanderbilt Avenue, New York, New York 10017.

         (c)     TBC is engaged primarily in the business of a securities
broker and dealer and investment adviser, is registered as a broker-dealer and
investment adviser with the Securities and Exchange Commission, and is a member
of the National Association of Securities Dealers, Inc.

         TBK is a private investment partnership and is currently, and at all
relevant times was, engaged primarily in the business of investing in
securities for its own account.

         Vanderbilt is a private investment partnership and is currently, and
at all relevant times was, engaged primarily in the business of investing in
securities for its own account.

         The present principal occupation of each of the General Partners is
serving as such for TBC, TBK and Vanderbilt.   The present principal occupation
of Thomas P. Knapp is serving as a general partner in TBK.  The principal
business address of each of TBC, TBK and Vanderbilt is set forth above.
   7
         (d)     None of TBC, TBK, Vanderbilt,  Thomas P. Knapp, nor any
General Partner has, during the last five years, been convicted in any criminal
proceeding (excluding traffic violations and similar misdemeanors).

         (e)     None of TBC, TBK, Vanderbilt,  Thomas P. Knapp,  nor any
General Partner  has, during the last five years, been a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction as a
result of which proceeding it or he was or is subject to a judgment, decree or
final order enjoining future violations of, or prohibiting or mandating
activities subject to, federal or state securities laws or finding any
violations with respect thereto.

         (f)     Each of TBC, TBK and Vanderbilt is a Delaware limited
partnership.  Each of the General Partners and Thomas P.  Knapp is a citizen of
the United States of America.

ITEM 3.  SOURCE AND AMOUNTS OF FUNDS OR OTHER CONSIDERATION

         As of the date hereof, the number of shares with respect to which TBC
may be deemed to be the beneficial owner is 458,160 shares of Common Stock (the
"TBC Shares"), all of which shares were purchased in open market transactions.
The aggregate cost of the TBC Shares, including brokerage commissions, was
$1,957,890.

         The TBC Shares are held in the TBC Accounts, the funds therefor coming
from the funds on hand in each individual managed account and in certain
instances from standard margin account borrowings from brokerage accounts
maintained at Fleet Clearing Corporation.  It is expected that funds used by
the TBC Accounts to purchase additional shares of Common Stock, if additional
shares are purchased by the TBC Accounts (see Item 4 hereof), will come from
the funds on hand for each individual managed account, which funds on hand at
any time and from time to time may include, among others, funds borrowed
pursuant to margin accounts maintained at Fleet Clearing Corporation.
Borrowings made by certain TBC Accounts pursuant to such margin accounts are
secured by margin securities owned by the respective accounts, including some
of the TBC Shares.  Interest on outstanding borrowings under such margin
accounts ranges from 1/2% to 2% over the brokers' call rate in effect from time
to time at Chemical Bank, New York, New York, depending upon the amount of
outstanding borrowings at any given time.

         As of the date hereof, TBK beneficially owns directly 10,000 shares of
Common Stock (the "TBK Shares"), all of which shares were purchased in open
market transactions.  The aggregate cost of the TBK Shares, including
brokerage commissions, was $45,553.

         It is expected that funds used by TBK to purchase additional shares of
Common Stock, if additional shares are purchased by TBK (see Item 4 hereof),
will come from TBK's general funds, which include cash and cash equivalents on
hand and in banks.

         TBK's general funds have included, and it is expected that they will
from time to time include, funds borrowed by it pursuant to an understanding
with Chemical Bank.  As of the date hereof, TBK has a loan outstanding with
Chemical Bank in the amount of $20,000.00.  Borrowings made by TBK pursuant to
that understanding bear interest at the brokers' call rate in effect from time
to time at Chemical Bank. TBK's funds on hand have also included, and it is
expected that they will from time to time include, funds borrowed by it
pursuant to an understanding with The Bank of New York, New York, New York.
Pursuant to that understanding, TBK may borrow funds at the brokers' call rate
charged from time to time by The Bank of New York.  As of the date hereof, TBK
has a loan outstanding with The Bank of New York in the amount of $10,000.00.
Borrowings made by TBK pursuant to its understandings with Chemical Bank and
The Bank of New York are secured by securities owned by TBK; such borrowings
are not secured by any TBK Shares.  No borrowings from Chemical Bank or The
Bank of New York were made for the purpose of acquiring the TBK Shares.  TBK
reserves the right to include all or any of the shares of Common Stock owned by
it at any time or from time to time, among the securities that serve as
collateral for such borrowings, subject to compliance with any applicable
statutes and regulations.
   8
         As of the date hereof, Vanderbilt beneficially owns directly 12,500
shares of Common Stock (the "Vanderbilt Shares"), all of which shares were
purchased in open market transactions hereof.)  The aggregate cost of the
Vanderbilt Shares, including brokerage commissions, was $54,996.

         It is expected that funds used by Vanderbilt to purchase additional
shares of Common Stock, if additional shares are purchased by Vanderbilt (see
Item 4 hereof), will come from Vanderbilt's general funds, which include cash
and cash equivalents on hand and in banks.

         Vanderbilt's general funds have included, and it is expected that they
will from time to time include, funds borrowed by it pursuant to an
understanding with Chemical Bank.  No borrowings from Chemical Bank were made
by Vanderbilt for the purpose of acquiring the Vanderbilt Shares.  Vanderbilt
reserves the right to include all or any of the shares of Common Stock owned by
it at any time or from time to time, among the securities that serve as
collateral for such borrowings, subject to compliance with any applicable
statutes and regulations.

ITEM 4.  PURPOSE OF TRANSACTION

         Each of TBC, TBK and Vanderbilt has acquired the shares of Common
Stock owned by it for investment purposes and for none of the reasons
enumerated in Item 4 of Schedule 13D, except that TBC, TBK and Vanderbilt may
dispose of all or some of the TBC Shares, the TBK Shares and the Vanderbilt
Shares, respectively, or may acquire additional shares of Common Stock from
time to time, depending upon price and market conditions, evaluation of
alternative investments, and other factors.  Currently, TBC, TBK and Vanderbilt
intend to acquire additional shares of Common Stock in the open market,
depending upon the price of the Common Stock from time to time.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER

         (a)  As of the date hereof, TBC may be deemed to be the beneficial
owner of an aggregate of 458,160 shares of Common Stock, which constitutes
approximately 4.93% of the 9,296,316 shares of Common Stock which TBC believes
to be the total number of shares of Common Stock outstanding.  The TBC Shares
are held in the TBC Accounts.

         As of the date hereof, TBK beneficially owns directly 10,000 shares of
Common Stock, which constitutes approximately 0.11% of the 9,296,316 shares of
Common Stock which TBK believes to be the total number of shares of Common
Stock outstanding.

         As of the date hereof, Vanderbilt beneficially owns directly 12,500
shares of Common Stock, which constitutes approximately 0.13% of the 9,296,316
shares of Common Stock which Vanderbilt believes to be the total number of
shares of Common Stock outstanding.

         Each of TBC, TBK and Vanderbilt disclaims that it is the beneficial
owner of any of the shares of Common Stock held in the TBC Accounts.  The
aggregate number of shares of Common Stock with respect to which TBC, TBK and
Vanderbilt could be deemed to be the beneficial owner as of the date hereof, is
480,660 shares, which constitutes approximately 5.17% of the 9,296,316 shares
of Common Stock,  which the filing persons believe to be the total number of
shares of Common Stock outstanding, but nothing contained herein shall be
construed as an admission that TBC is the beneficial owner of any of the TBC
Shares.

         The aggregate number of shares and percentage of Common Stock with
respect to which each of the General Partners may be deemed to be the beneficial
owner by reason of his being a general partner of TBC, TBK and Vanderbilt,
respectively, is 480,660 shares, which constitutes approximately 5.17% of the
9,296,316 shares of Common Stock outstanding.  The aggregate number of shares
and percentage of Common Stock  with respect to  which Thomas P. Knapp may be
deemed to be a beneficial owner by reason of his being a general partner of TBK
is 10,000 shares of Common Stock which constitutes approximately 0.11% of the
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9,296,316 shares of Common Stock outstanding.  However, nothing contained
herein shall be construed as an admission that any of the General Partners or
Thomas P. Knapp is the beneficial owner of any shares of Common Stock, except
as set forth herein as expressly and admittedly being beneficially owned by a
particular General Partner or Thomas P. Knapp.

         Each of TBC, TBK and Vanderbilt disclaims beneficial ownership of
Common Stock held by the other.  Except as described herein, to the best
knowledge of TBC, TBK and Vanderbilt, no person who may be deemed to comprise a
group with any of TBC, TBK, Vanderbilt, or any other person named in Item 2
hereof, beneficially owns any shares of Common Stock.

         (b)     TBC has investment discretion with respect to 458,160 shares
of Common Stock held by the TBC Accounts and has sole power to dispose or
direct the disposition of all of such shares.  Of these shares of Common Stock,
TBC has sole power to vote or to direct the voting of 417,970 shares of Common
Stock held in certain TBC Accounts.

         Each of the General Partners of TBC, solely by reason of their
positions as such, may be deemed to have (i) shared power to dispose of or to
direct the disposition of all of the shares of Common Stock held in the TBC
Accounts; and (ii) shared power to vote or direct the vote of 417,970 shares of
Common Stock held in certain TBC Accounts.

         TBK has the sole power to vote or direct the voting of and dispose or
direct the disposition of the TBK Shares.  Each of the General Partners and
Thomas P. Knapp,  solely by reason of their positions as general partners, may
be deemed to have shared power to vote or direct the vote of and to dispose or
direct the disposition of the TBK Shares.

         Vanderbilt has the sole power to vote or direct the voting of and
dispose or direct the disposition of the Vanderbilt Shares.  Each of the
General Partners of Vanderbilt, solely by reason of their positions as such,
may be deemed to have shared power to vote or direct the vote of and to dispose
or direct the disposition of the Vanderbilt Shares.

         (c)     During the sixty-day period ended as of the date hereof, TBC,
TBK and Vanderbilt have purchased shares of Common Stock in open
market transactions as follows:

NO OF SHARES PRICE TBC ACCOUNTS PURCHASED PER SHARE 12/05/95 65,000 $4.50 12/22/95 5,000 $4 1/8 12/26/95 2,600 $4 1/8 12/27/95 15,700 $4.1023 12/29/95 2,500 $4 1/8 01/03/96 6,000 $4 3/16 01/11/96 190,000 $4 1/8 01/23/96 4,500 $4 1/8 01/31/96 12,000 $4 1/4 02/02/96 2,100 $4 5/16 02/05/96 5,000 $4 5/16 02/09/96 5,000 $4 7/17 TBK: 12/05/95 10,000 $4.50 VANDERBILT: 02/06/96 12,500 $4 5/16
10 (d) To the best knowledge of TBC, each of the persons maintaining an account with TBC has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock held in said person's TBC Account. To the best knowledge of TBK, no person other than TBK has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the TBK Shares, except that the General Partners and Thomas P. Knapp may be deemed to have such rights and powers solely by reason of being general partners in TBK. To the best knowledge of Vanderbilt, no person other than Vanderbilt has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Vanderbilt Shares, except that the General Partners in Vanderbilt may be deemed to have such rights and powers solely by reason of being general partners in Vanderbilt. (e) Not applicable. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER. Except as otherwise described herein, none of TBC, TBK or Vanderbilt, nor, to the best knowledge of TBC, TBK or Vanderbilt, any other person named in Item 2 hereof, has any contract, arrangement, understanding or relationship with respect to any securities of the Issuer. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS Exhibit 99.1 - - Agreement pursuant to Rule 13d-1(f)(1)(iii). 11 SIGNATURE Each of Tweedy, Browne Company L.P., TBK Partners, L.P. and Vanderbilt Partners, L.P., after reasonable inquiry and to the best of its knowledge and belief, hereby certifies that the information set forth in this Statement (which includes the Exhibit annexed hereto) is true, complete and correct. TWEEDY, BROWNE COMPANY L.P. By_________________________ Christopher H. Browne General Partner TBK PARTNERS, L.P. By_________________________ Christopher H. Browne General Partner VANDERBILT PARTNERS, L.P. By_________________________ Christopher H. Browne General Partner Dated: February 12, 1996
   1
                                  EXHIBIT 99.1


         AGREEMENT dated as of February 12, 1996 among Tweedy, Browne Company
L.P., a Delaware limited partnership ("TBC"), TBK Partners, L.P., a Delaware
limited partnership ("TBK"), and Vanderbilt Partners L.P., a Delaware limited
partnership ("Vanderbilt").


                                  WITNESSETH:

         WHEREAS, TBC, TBK and Vanderbilt may be deemed to have acquired, in
the aggregate, beneficial ownership of more than five percent of the Common
Stock (the "Common Stock") of Matrix Service Company (the "Company")  and

         WHEREAS, pursuant to Rule 13d-1 under the Securities Exchange Act of
1934 (the "Act"), a Statement on Schedule 13D must be filed by any person who
acquires more than five percent of registered equity securities; and

         WHEREAS, in accordance with Rule 13d-1(f) of the Act, only one such
Statement need be filed whenever two or more persons are required to file such
a Statement pursuant to Section 13(d) of the Act with respect to the same
securities, provided that said persons agree in writing that such Statement is
filed on behalf of each of them.

         NOW, THEREFORE, in consideration of the premises and mutual agreements
herein contained, the parties hereto agree as follows:

         TBC, TBK and Vanderbilt do hereby agree, in accordance with Rule
13d-1(f) under the Act, to file one Statement on Schedule 13D relating to their
ownership of the Common Stock, and do hereby further agree that said Statement
shall be filed on behalf of each of TBC, TBK and Vanderbilt.  Nothing herein,
however, shall be, or shall be deemed to be, an admission that the parties
hereto, or any of them, are members of a "group" (within the meaning of Section
13(d) of the Act and the rules and regulations promulgated thereunder) with
respect to any securities of the Company.

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first above written.


TWEEDY, BROWNE COMPANY L.P.                        VANDERBILT PARTNERS, L.P.



By __________________________                      By __________________________
   Christopher H. Browne                              Christopher H. Browne
   General Partner                                    General Partner


TBK PARTNERS, L.P.



By __________________________
   Christopher H. Browne
   General Partner