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                                                                   EXHIBIT 10.34

                       SIXTH AMENDMENT TO CREDIT AGREEMENT

      THIS SIXTH AMENDMENT TO CREDIT AGREEMENT (this "Amendment"), dated as of
the 15th day of January, 2003, by and between STEEL CITY PRODUCTS, INC., a
Delaware corporation (the "Borrower") and NATIONAL CITY BANK OF PENNSYLVANIA
(the "Bank").

                                   BACKGROUND

      A. The Borrower and the Bank entered into a certain Credit Agreement dated
as of July 13, 2001 (as amended, supplemented, replaced or otherwise modified,
the "Agreement") pursuant to which the Bank has made a credit facility or
facilities available to the Borrower.

      B. The Borrower has requested the Bank to permit certain subordinated
indebtedness, and the Bank is willing to do so upon the terms and conditions set
forth in this Amendment.

      NOW THEREFORE, intending to be legally bound hereby, the parties hereto
amend the Agreement and agree as follows:

      Section 1. Capitalized Terms.

      Unless otherwise specified herein, capitalized terms used in this
Amendment (including the BACKGROUND above) without definition shall have the
same meaning as set forth in the Agreement as amended by this Amendment.

      Section 2. Amendments.

      The Agreement is hereby amended as follows:

      2.1 Section 6.03 of the Agreement is hereby supplemented to include the
following subsection (f) at the end thereof:

            "(f) Subordinated Indebtedness from January 15, 2003, with a
maturity of July 15, 2003, which is subject to a Subordination Agreement
substantially in the form of Exhibit A hereto; provided, however, that the Bank
shall consent to the repayment of the Subordinated Indebtedness described in
this item (f) when each of the following items is delivered to the Bank, in form
and substance satisfactory to the Bank: (i) the Borrower's December 31, 2002 and
March 31, 2003 financial statements, which are in compliance with Section 5.01
hereof; (ii) a Compliance Certificate for each of December 31, 2002 and March
31, 2003, each of which prove compliance with Section 6.01 hereof; (iii) a pro
forma Compliance Certificate for each of June 30, 2003, September 30, 2003 and
December 31, 2003, each of which show, to the best of management's information
and belief, pro forma compliance with Section 6.01 hereof at such dates; and
(iv) evidence that from March 21,

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2003 through and including March 31, 2003, there is availability of at least
$250,000 under the Revolving Credit Commitment and immediately upon the
repayment of Subordinated Indebtedness under this item (f) is made, the
availability under the Revolving Credit Commitment is at least $100,000."

      Section 3. Covenants, Representations and Warranties.

      3.1 The Borrower ratifies, confirms and reaffirms, without condition, all
the terms and conditions of the Agreement and the other Loan Documents and
agrees that it continues to be bound by the terms and conditions thereof as
amended by this Amendment; and, the Borrower further confirms and affirms that
it has no defense, set off or counterclaim against the same. The Agreement and
this Amendment shall be construed as complementing each other and as augmenting
and not restricting the Bank's rights, and, except as specifically amended by
this Amendment, the Agreement shall remain in full force and effect in
accordance with its terms.

      3.2 The Borrower ratifies, confirms and reaffirms without condition, all
liens and security interests granted to the Bank pursuant to the Agreement and
the other Loan Documents, if any, and such liens and security interests shall
continue to secure the indebtedness and obligations of the Borrower to the Bank
under the Agreement, the Note and the other Loan Documents, including, but not
limited to, all loans made by the Bank to the Borrower as amended by this
Amendment.

      3.3 The Borrower represents and warrants to the Bank that:

            (a) This Amendment has been duly executed and delivered by the
Borrower and constitutes the legal, valid and binding obligations of the
Borrower enforceable in accordance with its terms;

            (b) The execution and delivery of this Amendment by the Borrower and
the performance and observance by the Borrower of the provisions hereof, do not
violate or conflict with the organizational agreements of the Borrower or any
law applicable to the Borrower or result in a breach of any provision of or
constitute a default under any other agreement, instrument or document binding
upon or enforceable against the Borrower;

            (c) The representations and warranties set forth within Article III
of the Agreement continue to be true and correct in all material respects as of
the date of this Amendment except those changes resulting from the passage of
time; and

            (d) No material adverse change has occurred in the business,
operations, consolidated financial condition or prospects of the Borrower since
the date of the most recent annual financial statement delivered to the Bank,
and no Event of Default or condition which, with the passage of time, the giving
of notice or both, could become an Event of Default has occurred and is
continuing.

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      3.4 The Borrower shall execute or cause to be executed and delivered to
the Bank all other documents, instruments and agreements deemed necessary or
appropriate by the Bank in connection herewith.

      Section 4. Conditions Precedent.

      4.1 This Amendment shall be effective on the date hereof so long as each
of the following conditions has been satisfied:

            (a) No Event of Default shall have occurred and be continuing on the
date of this Amendment.

            (b) The representations and warranties set forth within Article III
of the Agreement shall continue to be true and correct in all material respects
as of the date of this Amendment except those changes resulting from the passage
of time only.

            (c) Contemporaneously with the execution hereof, the Borrower shall
deliver, or cause to be delivered, to the Bank:

                  (i) The Subordination Agreement, substantially in the form of
Exhibit A hereto, together with a copy of the subordinated notes related
thereto;

                  (ii) A certificate of the corporate secretary or assistant
secretary of the Borrower, dated the date hereof, certifying (1) that the
Articles of Incorporation and By-Laws of the Borrower have not been changed
since they were delivered to the Bank, or if there have been any such changes,
attaching copies thereof as then in effect and (2) as to true copies of all
corporate action taken by the Borrower in authorizing the execution, delivery
and performance of this Amendment, and the transactions contemplated thereby;
and

                  (iii) Such other documents, instruments and certificates
required by the Bank in connection with the transactions contemplated by this
Amendment.

      4.2 The Bank shall continue to have a first priority lien on and security
interest in the Collateral, if any, previously granted to the Bank.

      4.3 All legal details and proceedings in connection with the transactions
contemplated in this Amendment shall be satisfactory to counsel for the Bank,
and the Bank shall have received all such originals or copies of such documents
as the Bank may request.

      Section 5. Miscellaneous.

      5.1 This Amendment shall be construed in accordance with, and governed by
the laws of the Commonwealth of Pennsylvania without giving effect to the
provisions thereof regarding conflicts of law.

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      5.2 Except as amended hereby, all of the terms and conditions of the
Agreement shall remain in full force and effect. This Amendment amends the
Agreement and is not a novation thereof.

      5.3 This Amendment shall inure to the benefit of, and shall be binding
upon, the respective successors and assigns of the Borrower and the Bank. The
Borrower may not assign any of its rights or obligations hereunder without the
prior written consent of the Bank.

      5.4 This Amendment may be executed in any number of counterparts and by
the different parties hereto on separate counterparts each of which, when so
executed, shall be deemed an original, but all such counterparts shall
constitute but one and the same instrument.

                [THIS PORTION OF PAGE INTENTIONALLY LEFT BLANK.]

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      IN WITNESS WHEREOF, the parties hereto have caused their duly authorized
officers to execute and deliver this Sixth Amendment to Credit Agreement the day
and year first above written.

ATTEST:                                   STEEL CITY PRODUCTS, INC.

By:  /s/ Karen Stempinski                 By: /s/ Maarten Hemsley
     ---------------------------------        --------------------------
Name:   Karen A. Stempinski               (SEAL)
Title:  Assistant Secretary               Name:   Maarten Hemsley
                                          Title:  C.F.O.
                    (SEAL)

                                          NATIONAL CITY BANK OF
                                          PENNSYLVANIA

                                          By: /s/ Lori B. Shure
                                              --------------------------
                                          Name:   Lori B. Shure
                                          Title:  Treasurer<PAGE>
                                                                   EXHIBIT 10.36

                                 AMENDMENT NO. 1
                                       TO
                         EXECUTIVE EMPLOYMENT AGREEMENT

THIS AMENDMENT NO. 1 TO EXECUTIVE EMPLOYMENT AGREEMENT (this "Agreement") is
made and entered into as of the 2nd day of November 2005 (the "Effective Date")
by and between PATRICK T. MANNING ("Mr. Manning;") STERLING CONSTRUCTION
COMPANY, INC. ("Sterling") and STERLING GENERAL, INC. ("SGI") each with a place
of business in Harris County, Texas; and STERLING HOUSTON HOLDINGS, INC. ("SHH")
with its statutory corporate office located in Wilmington, Delaware.

                                   BACKGROUND

Mr. Manning, Sterling and SHH are the parties to that certain Executive
Employment Agreement dated as of July 18, 2004 (the "Employment Agreement.")
Sterling, SHH and Mr. Manning, noting that Mr. Manning is a director, officer
and employee of SGI, now wish to amend the Employment Agreement because each
believes that it is in the best interests of Sterling and its affiliates that
Mr. Manning cease to be a director, officer and employee of SHH.

THEREFORE, in consideration of the foregoing recitals and for other good and
valuable consideration, the parties agree as follows:

1.   Sterling General, Inc. is hereby substituted for Sterling Houston Holdings,
     Inc. as a party to the Employment Agreement; the definition of "Companies"
     in the preface to the Employment Agreement is amended to mean Sterling and
     SGI; and SHH as of the date hereof ceases to be a party to the Employment
     Agreement.

2.   Each reference in the Employment Agreement to "Sterling Houston Holdings,
     Inc." is hereby replaced by a reference to "Sterling General, Inc.", and
     each reference to "SHH" is hereby replaced by a reference to "SGI," except
     as follows:

     (a)  In Section 1 ("Prior Agreements") the reference to "SHH" is amended to
          read "Sterling Houston Holdings, Inc. ("SHH")".

     (b)  In subsection (i) of Section 5(b) ("Incentive Compensation") the
          reference in the third line to "SHH" is amended to read "Texas
          Sterling Construction, L.P."

     (c)  In subsection (f) of Section 6 ("Termination") no change shall be made
          to the reference to SHH.

     (d)  In Schedule A ("Definition of EBITDA") the phrase "SHH and its
          consolidated subsidiaries for a given fiscal year" is amended to read
          "Texas Sterling Construction, L.P. for a given fiscal year".

3.   By the execution hereof, Mr. Manning waives any and all rights that he may
     have under the Employment Agreement arising out of the fact that he has
     ceased to be a director, officer and employee of SHH.

4.   In all other respects, the Employment Agreement shall remain as originally
     written.

EXECUTED effective as of the Effective Date.

STERLING CONSTRUCTION COMPANY, INC.

By:   /s/ Joseph P. Harper, Sr.              /s/ Patrick T. Manning
   ----------------------------------      ------------------------------------
    Joseph P. Harper, Sr., President       PATRICK T. MANNING

STERLING HOUSTON HOLDINGS, INC.            STERLING GENERAL, INC.

By:  /s/ Maarten D. Hemsley                By: /s/ Joseph P. Harper, Sr.
   -----------------------------------        ---------------------------------
    Maarten D. Hemsley, President              Joseph P. Harper, Sr., Treasurer

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