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UNITED STATES 

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549


SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 2 )*

Matrix Service Company
- -------------------------------------------------------------------
(Name of Issuer)


Common Stock
- -------------------------------------------------------------------
(Title of Class of Securities)


57685310
- --------------
(CUSIP NUMBER)

Check the following box if a fee is being paid with this statement.[ ]  (A
fee is not required only if the filing 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 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 ("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).
  



Page 2 of 12 Pages


CUSIP NO. 57685310                  13G

1. NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Merrill Lynch & Co., Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* Joint Filing 

(a) [ ]
(b) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION
     
Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

NONE

6. SHARED VOTING POWER

931,940

7. SOLE DISPOSITIVE POWER

NONE

8. SHARED DISPOSITIVE POWER

931,940

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

931,940

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

10.0%

12. TYPE OF REPORTING PERSON*

HC, CO

    *SEE INSTRUCTION BEFORE FILING OUT!



Page 3 of 12 Pages


CUSIP NO.    57685310               13G

1. NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Merrill Lynch Group, Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* Joint Filing

(a) [ ]                                       
(b) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION
     
Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

NONE

6. SHARED VOTING POWER

930,000

7. SOLE DISPOSITIVE POWER

NONE

8. SHARED DISPOSITIVE POWER

930,000

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

930,000

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

10.0%

12. TYPE OF REPORTING PERSON*

HC, CO

    *SEE INSTRUCTION BEFORE FILING OUT!



Page 4 of 12 Pages


CUSIP NO.    57685310               13G

1. NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Princeton Services, Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* Joint Filing

(a) [ ]
(b) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION
     
Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

NONE

6. SHARED VOTING POWER

930,000

7. SOLE DISPOSITIVE POWER

NONE

8. SHARED DISPOSITIVE POWER

930,000

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

930,000

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

10.0%

12. TYPE OF REPORTING PERSON*

HC, CO

    *SEE INSTRUCTION BEFORE FILING OUT!



Page 5 of 12 Pages


CUSIP NO.   57685310                13G

1. NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Fund Asset Management, L.P.

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* Joint Filing 

(a) [ ]
(b) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

NONE

6. SHARED VOTING POWER

930,000

7. SOLE DISPOSITIVE POWER

NONE

8. SHARED DISPOSITIVE POWER

930,000

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

930,000

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

10.0%

12. TYPE OF REPORTING PERSON*

IA, PN

    *SEE INSTRUCTION BEFORE FILING OUT!



Page 6 of 12 Pages


CUSIP NO.    57685310              13G

1. NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Merrill Lynch Phoenix Fund, Inc.

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* Joint Filing 

(a) [ ]
(b) [ ]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION
     
Maryland

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5. SOLE VOTING POWER

NONE

6. SHARED VOTING POWER

930,000

7. SOLE DISPOSITIVE POWER

NONE

8. SHARED DISPOSITIVE POWER

930,000

9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

930,000

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

10.0%

12. TYPE OF REPORTING PERSON*

IV

    *SEE INSTRUCTION BEFORE FILING OUT!



Page 7 of 12 Pages


                    SCHEDULE 13G


ITEM 1 (a)  Name of Issuer:
            --------------

            Matrix Service Company

ITEM 1 (b)  Address of Issuer's Principal Executive Offices:
            -----------------------------------------------

            10701 East Ute Steet
            Tulsa, Oklahoma 74116-1517
            

ITEM 2 (a)  Name of Persons Filing:
            ---------------------

            Merrill Lynch & Co., Inc.
            Merrill Lynch Group, Inc..
            Princeton Services, Inc.
            Fund Asset Management, L.P.
            Merrill Lynch Phoenix Fund, Inc.

ITEM 2 (b)  Address of Principal Business Office or, if none, Residence:
            -----------------------------------------------------------
                
Merrill Lynch & Co., Inc.
World Financial Center, North Tower
250 Vesey Street
New York, New York  10281

Merrill Lynch Group, Inc.
World Financial Center, North Tower
250 Vesey Street
New York, New York  10281

Princeton Services, Inc.
800 Scudders Mill Road
Plainsboro, New Jersey  08536

Fund Asset Management, L.P.
800 Scudders Mill Road
Plainsboro, New Jersey  08536

Merrill Lynch Phoenix Fund, Inc.
800 Scudders Mill Road
Plainsboro, New Jersey  08536



Page 8 of 12 Pages


ITEM 2 (c)  Citizenship:
            -----------

See Item 4 of Cover Pages

ITEM 2 (d)  Title of Class of Securities:
            ----------------------------

Common Stock

ITEM 2 (e)  CUSIP NUMBER:
                
57685310

ITEM 3          
   
   Merrill Lynch & Co., Inc. ("ML&Co."), Merrill Lynch Group, Inc. ("ML
Group") and Princeton Services, Inc. ("PSI") are parent holding companies, in
accordance with (S) 240.13d-1(b) (ii) (G).  Fund Asset Management, L.P.
(d/b/a) Fund Asset Management ("FAM") is an investment adviser registered
under (S) 203 of the Investment Advisers Act of 1940.  Merrill Lynch
Phoenix Fund, Inc. (the "Fund") is an investment company registered
under Section 8 of the Investment Company Act of 1940.

ITEM 4  Ownership
        --------- 

(a)  Amount Beneficially Owned:
             
   See Item 9 of Cover Pages.  Pursuant to (S) 240.13d-4, ML&Co., ML Group, 
PSI, FAM and the Fund (the "Reporting Persons") disclaim beneficial ownership
of the securities of Matrix Service Company (the "Company") referred 
to herein, and the filing of this Schedule 13G shall not be construed as an 
admission that the Reporting Persons are, for the purposes of Section 13(d) 
or 13(g) of the Securities Exchange Act of 1934, the beneficial owner of any 
securities of the Company covered by this statement.

(b)  Percent of Class:

     See Item 11 of Cover Pages

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

     (i)  sole power to vote or to direct the vote:
                 
          See Item 5 of Cover Pages
                 
    (ii)  shared power to vote or to direct the vote:

          See Item 6 of the Cover Pages

   (iii)  sole power to dispose of or to direct the disposition of:
                            
          See Item 7 of Cover Pages



Page 9 of 12 Pages



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

          See Item 8 of Cover Pages
                        
ITEM 5  Ownership of Five Percent or Less of a Class.
        --------------------------------------------

Not Applicable   

ITEM 6  Ownership of More than Five Percent on Behalf of Another Person.
        ---------------------------------------------------------------
  
  FAM is an investment adviser registered under Section 203 of the Investment
Advisers Act of 1940 and acts as an investment adviser to investment companies
registered under Section 8 of the Investment Company Act of 1940.  With respect
to securities held by those investment commpanies, several person have the 
right to receive, or the power to direct the receipt of dividends from, or 
the proceeds from the sale of, such securities.  Merrill Lynch Phoenix
Fund, Inc., a reporting person on this Schedule 13G for which FAM serves
as investment adviser, has an interest that relates to more than 5% of the
class of securities reported herein.  No other person has an interest
that relates to more than 5% of the class of securities reported herein.


ITEM 7   Identification and Classification of the Subsidiary Which 
         ---------------------------------------------------------
  Acquired the Security Being Reported on by the Parent Holding Company.
  ---------------------------------------------------------------------

See Exhibit A

ITEM 8   Identification and Classification of Members of the Group.
         ----------------------------------------------------------

Not Applicable



Page 10 of 12 Pages


ITEM 9  Notice of Dissolution of Group.
        ------------------------------

Not Applicable

ITEM 10  Certification
         -------------

    By signing below each of the undersigned certifies that, to the best of
their knowledge and belief, the securities referred to above were acquired in
the ordinary course of business and were not acquired for the purpose of and do
not have the effect of changing or influencing the control of the issuer of such
securities and were not acquired in connection with or as a participant in any
transaction having such purpose or effect.

Signature.
- ---------

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


Date:  February 10, 1995

Merrill Lynch & Co, Inc.

/s/ David L. Dick
- ----------------------------
Name: David L. Dick
Title:  Assistant Secretary


Merrill Lynch Group, Inc.

/s/ David L. Dick
- -----------------------------
Name: David L. Dick
Title:  Secretary


Princeton Services, Inc.  

/s/ David L. Dick
- -----------------------------
Name:  David L. Dick
Title:  Attorney-In-Fact*


- ------------------------------------
* Signed pursuant to a power of attorney, dated February 10, 1994, included as 
an Exhibit to Schedule 13G filed with the Securities and Exchange Commission
by Merrill Lynch Group, Inc. et. al. on February 14, 1994 with respect to Dial 
REIT Inc.



Page 11 of 12 Pages


Fund Asset Management, L.P.
By: Princeton Services, Inc. (General Partner)

/s/ David L. Dick
- -------------------------
Name:   David L. Dick
Title Attorney-In-Fact*


Merrill Lynch Phoenix Fund, Inc.

/s/ David L. Dick
- --------------------------
Name: David L. Dick
Title:  Attorney-In-Fact**

* Signed pursuant to a power of attorney, dated February 10, 1994, included 
as an Exhibit to Schedule 13G filed with the Securities and Exchange Commission 
by Merrill Lynch & Co, Inc. et. al. on February 14, 1994 with respect 
to Matrix Service Company.


** Signed pursuant to a power of attorney, dated February 10, 1994, included as
an Exhibit to this Schedule 13G filed with the Securities and Exchange 
Commission by Merrill Lynch & Co., Inc. et. al. on February 14, 1994 with 
respect to Matrix Service Company.



Page 12 of 12 Pages


                        EXHIBIT A TO SCHEDULE 13G
                        -------------------------

                    ITEM 7 DISCLOSURE RESPECTING SUBSIDIARIES
                    -----------------------------------------

   Three of the persons filing this report, Merrill Lynch & Co., Inc., a
Delaware corporation with its principal place of business at World Financial
Center, North Tower,  250 Vesey Street, New York, New York ("ML&Co."), Merrill
Lynch Group, Inc., a Delaware corporation with its principal place of business
at World Financial Center, North Tower, 250 Vesey Street, New York, New York 
("ML Group"), and Princeton Services, Inc. a Delaware corporation with its 
principal place of business at 800 Scudders Mill Road, Plainsboro, New Jersey,
("PSI") are parent holding companies pursuant to (S)240 13d-1(b) (1) (ii) (G).
The relevant subsidiaries of Merrill  Lynch & Co. are Merrill Lynch Pierce,
Fenner and Smith Incorporated ("MLPF&S"), ML Group and PSI, which 
is the general partner of Fund Asset Management, L.P. (d/b/a) Fund Asset 
Management ("FAM").  The relevant subsidiary of Merrill Lynch Group is PSI.
 
    MLPF&S is a wholly-owned direct subsidiary of ML&Co. and a broker-dealer
registered pursuant to the Securities Exchange Act of 1934. MLPF&S may be
deemed the beneficial owner of certain securities of Matrix Service Company
(the "Company") reported herein as a result of its proprietary trading 
activity.
    
    ML Group, a wholly-owned direct subsidiary of ML&Co., may be deemed to be 
the beneficial owner of 10.0% of the common stock of the Company by virtue of
its control of its wholly-owned subsidiary, PSI.

    PSI, a wholly-owned direct subsidiary of ML Group, may be deemed to be the
beneficial owner of 10.0% of the common stock of the Company by virtue
of its being the general partner of FAM.

    FAM, a Delaware limited partnership with its principal place of business
at 800 Scudders Mill Road, Plainsboro, New Jersey, is an investment adviser
registered under Section 203 of the Investment Advisers Act of 1940.  FAM may
be deemed to be the beneficial owner of 10.0% of the common stock of
the Company by virtue of its acting as investment adviser to Merrill Lynch
Phoenix Fund, Inc. an investment company registered under Section 8
of the Investment Company Act of 1940 which is the beneficial owner 
of 10.0% of the common stock of the Company.

    Pursuant to (S)240.13d-4, ML & Co., ML Group, MLPF&S, PSI, FAM and the 
Fund disclaim beneficial ownership of the securities of the Company, and the
filing of this Schedule 13G shall not be construed as an admission that any 
such entity is, for the purposes of Section 13(d) or 13(g) of the Securities 
Exchange Act of 1934, the beneficial owner of any securities of the Company,
other than, in the case of ML&Co. and MLPF&S, securities of the Company held
by MLPF&S in proprietary accounts.