Document:

Exhibit 10.3

    De
      Beira Goldfields inc.

    30
      Ledgar
      Road

    Balcatta,
      Western Australia

    6021

    

    

    June
      15,
      2006

    

    Emco
      Corporation

    World
      Trade Center Panama

    Calle
      53,
      Aptdo. 871295

    Marbella,
      Panamá

    República
      de Panamá

    Fax
      507-269-4991

    

    Attention:
      Francisco Carrano

    

    Dear
      Sirs:

    

    Re:
      Acquisition of 80% interest of Minera Nanguita CA
      (“MINANCA”)

    

    This
      letter will confirm our previous discussions concerning the proposed acquisition
      of an 80% interest in MINANCA (the “Subsidiary”)
      by De
      Beira Goldfields Inc. (“De
      Beira”).

    

    This
      letter agreement sets forth the terms and conditions of the proposed
      acquisition, which, when accepted by Emco Corporation (“Emco”),
      will
      form a binding agreement between us, with such terms and conditions to be
      embodied in due course in a more formal agreement (the “Formal
      Agreement”),
      which
      will form a binding agreement among De Beira, Emco and the
      Subsidiary.

    

    Based
      on
      our previous discussions and correspondence, De Beira agrees to acquire an
      80%
      interest in the Subsidiary by acquiring 17,200 shares in the capital of the
      Subsidiary from Emco (the “Shares”)
      for an
      aggregate purchase price comprising of 3 million restricted common shares in
      the
      capital of De Beira at a deemed price of not less than US$10.00 per common
      share
      and a cash payment of US$400,000. 

    

    The
      Formal Agreement and the closing will be conditional upon the
      following:

    

    	a.  	
            De
              Beira paying a deposit of US$500,000 to Emco on the acceptance of this
              letter agreement by Emco (funds to be wire transferred prior to public
              announcement). 

          

     

    	b.  	
            De
              Beira will be allowed to conduct due diligence on the property owned
              by
              the Subsidiary (collectively, the “Mine”).

          

    

    	c.  	
            The
              due diligence to be conducted by De Beira will be completed by July
              7,
              2006.

          

    

    

    If
      the
      Formal Agreement is not completed and closing does not occur by the close of
      business on July 10, 2006, Emco will immediately thereafter refund the full
      amount of US$500,000 to De Beira, subject to the terms and conditions of
      paragraph 3 below.

    

    The
      Formal Agreement will provide, among other terms and conditions, the
      following:

    

    	1.  	
            Upon
              satisfactory completion and closing of the transaction proposed by
              this
              letter agreement, the US$500,000 deposit paid by De Beira will be utilized
              and deemed to be for the following
              purposes:

          

    

    	i.  	
            US$400,000
              as comprising the cash portion of the purchase price for the Shares
              and
              paid to existing shareholders of the Subsidiary;
              and

          

    

    	ii.  	
            US$100,000
              as a loan from De Beira to the Subsidiary for expenditure on the
              Mine.

          

    

    	2.  	
            De
              Beira will advance a further sum of US$7,000,000 to the Subsidiary
              for the
              following purposes:

          

    

    	i.  	
            US$1,500,000
              within 15 days of the completion of De Beira’s due diligence on the Mine
              to be used for upgrade expenditures on the
              Mine;

          

    

    	ii.  	
            US$400,000
              to be used for upgrades to the Mine by July 31,
              2006;

          

    

    	iii.  	
            US$1,375,000
              by October 2, 2006 to be paid to the Bank of Guayaquil for existing
              debt
              owed by the Subsidiary to the Bank of Guayaquil;
              and

          

    

    	iv.  	
            the
              balance of US$3,725,000 to be used for exploration expenditures on
              the
              Mine and to be paid equally over a period of five months beginning
              September 1, 2006 with the final payment due on January1,
              2007.

          

    

    	3.  	
            The
              Subsidiary will undertake to grant a mortgage over all its assets to
              De
              Beira as security against the loan funds provided by De Beira under
              the
              terms of the previous paragraphs. The loan will be repaid from cash
              surpluses generated from production by the Subsidiary prior to any
              dividend or distribution payments to shareholders of the
              Subsidiary.

          

    

    	4.  	
            The
              Shares will be held in escrow until the purchase price for the Shares
              is
              paid in full.

          

    

    	5.  	
            The
              Subsidiary will appoint De Beira as the Joint Operator of the Mine
              with
              the existing operator, Overton SA.

          

    

    	6.  	
            De
              Beira will be responsible for keeping the Mine and all permits in good
              standing during the term of the Formal
              Agreement.

          

    

    Miscellaneous

    

    
      	
              1.

            	
              It
                is understood that contained in the Formal Agreement will be the
                normal
                and usual covenants and warranties for a transaction of this nature,
                including among other things, but without limitation, due existence
                and
                good standing of the Subsidiary and the Mine. The Formal Agreement
                will
                also disclose and contain warranties concerning, without limitation,
                the
                correctness and accuracy of the financial statements; taxes; the
                holdings
                of permits, licences, consents and authorities necessary to carry
                on the
                business; the amount or value of liabilities, accounts receivable,
                all
                commitments for the payment of dividends, bonuses, salaries, management
                fees and employee benefits; all purchase orders and other obligations;
                and
                all outstanding guarantees and performance
                bonds.

            

    

    

    
      	
              2.

            	
              Pending
                the closing of the transaction, De Beira and its representatives
                will
                have, at reasonable times and with minimal disruption, access to
                the
                Subsidiary’s books and records, financial and operating data, material
                contracts and other information with respect to the business as De
                Beira
                will reasonably request.

            

    

    

    
      	
              3.

            	
              All
                information will be kept confidential and will be divulged by the
                parties
                only to their respective principals and professional advisors, unless
                required by law to be disclosed.

            

    

    

    
      	
              4.

            	
              Each
                of the parties will pay their own costs, expenses and fees (including,
                without limitation, legal counsel) incurred in connection with the
                preparation, execution and the consummation of this letter agreement
                and
                the Formal Agreement.

            

    

    

    
      	
              5.

            	
              This
                letter agreement and the Formal Agreement will be interpreted in
                accordance with the laws of the State of Nevada and will enure to
                the
                benefit of and be binding upon De Beira and Emco, and their respective
                heirs, successors and permitted
                assigns.

            

    

    

    
      	
              6.

            	
              De
                Beira and Emco agree to sign such further and other deeds and documents,
                including without limitation, the Formal Agreement and to give such
                further and other assurances as may be necessary to fully implement
                this
                letter agreement.

            

    

    

    
 

    

    [The
      remainder of this page was intentionally left blank]

    

    If
      the
      foregoing accurately sets forth your understanding of our agreement, please
      sign
      this letter agreement where indicated below, which will then form a binding
      agreement between us, subject only to the terms and conditions aforesaid. We
      will then immediately begin preparation of the Formal Agreement.

    

    

    Yours
      truly,

    

    De
      Beira Goldfields Inc.

    

    Per: /s/
      Reg Gillard        c/s

    

     

    Authorized
      Signatory

    

    

    ACCEPTED
      AND AGREED TO THIS 15th
      DAY OF JUNE, 2006:

    

    

    Emco
      Corporation

    

    c/s     Per: /s/
      Francisco Carrano

     Francisco
      Carrano, PresidentExhibit 10.1

SECOND AMENDMENT TO REGISTRATION RIGHTS AGREEMENT

This Second Amendment to
Registration Rights Agreement (this “Amendment”)
dated as of June 28, 2006, by and among InfraSource Services, Inc., a
Delaware corporation (the “Company”),
and the persons listed on Schedule I attached hereto (collectively, the “Securityholders”).

WHEREAS, the Registration
Rights Agreement dated as of April 20, 2004, as amended on December 7,
2005, by and among the Company and the Securityholders (as so amended, the “Original Registration Rights
Agreement”), provides that it may be amended or modified with
the written consent of Holders of a majority of the Registrable Securities then
outstanding as determined by the Company; and

WHEREAS, the Company and the
Securityholders executing this Amendment (which Securityholders represent
Holders of a majority of the Registrable Securities currently outstanding as
determined by the Company) desire to amend the Original Registration Rights
Agreement as set forth below; and

WHEREAS, all capitalized
terms used, but not otherwise defined, herein shall have the meaning ascribed
to them in the Original Registration Rights Agreement.

NOW, THEREFORE, in
consideration of the foregoing, and for other good and valuable consideration,
the receipt and adequacy of which are hereby acknowledged, the parties hereto
agree as follows:

Section 1.            Amendment
to Original Registration Rights Agreement.

1.1.        Amendment to Section 3.

Notwithstanding any other
provision in the Original Registration Rights Agreement, POF and Power
(together, the “Major Shareholders”) shall
have the right to request a registration on Form S-3 within 180 days
from March 20, 2006 for an underwritten public offering of shares of
Common Stock (the “New Offering” and the Form S-3
for the New Offering, the “New Offering S-3”);
provided, however, if the New Offering is not priced on or before August 1,
2006 (or such later date as approved by the Audit Committee of the Board of
Directors of the Company, the Company may withdraw the New Offering S-3.

1.2.        Amendment
to Section 5(c).

Notwithstanding any other
provision in the Original Registration Rights Agreement, with respect to the
New Offering, the managing underwriter(s) and members of the underwriting
group will be reasonably acceptable to the Company and the Major Shareholders.

1.3.        Amendment
to Section 7.

Notwithstanding any other
provision in the Original Registration Rights Agreement, whether or not the New
Offering is completed, the Holders shall pay all of their

 

expenses incurred in connection with the New Offering,
including underwriters’ discounts and commissions, and all expenses incurred by
the Company in connection with the New Offering, including all Registration
Expenses and all expenses incurred by the Special Committee of the Board of
Directors formed in connection with the New Offering, pro rata based on the
number of shares of Common Stock sold by them in the New Offering (or, if the
New Offering is not completed, registered on their behalf for sale in the New
Offering); provided, however, the Company shall pay the reasonable fees and
expenses, not to exceed $20,000, for one counsel for the Holders (other than
the Major Shareholders) participating in the New Offering.

Section 2.              Miscellaneous.

2.1.        Indemnity. The
Major Shareholders shall jointly and severally indemnify the Company, its
officers, directors, shareholders, employees, advisors and agents against any
and all losses, claims, damages, liabilities and expenses (collectively, “Losses”),
which they may suffer, sustain, incur or be required to pay arising out of or
based upon this Amendment, but not otherwise arising out of or based upon the
New Offering (including without limitation any disclosure related thereto or
the results thereof, and it being understood that indemnifiable Losses shall
not include Losses arising solely by virtue of the fact that the New Offering
would not have occurred in the absence of this Amendment).

2.2         Effectiveness. This
Agreement shall be deemed effective as of the date first written above, as if
executed by all parties hereto on such date. Except as specifically modified by
the terms set forth herein, the parties hereto acknowledge and agree that the
Original Registration Rights Agreement is in full force and effect. All
references in the Original Registration Rights Agreement to the “Agreement”
shall be deemed to refer to the Original Registration Rights Agreement as
amended by this Amendment.

2.3.        Further Assurances.
Each party agrees that, from time to time upon the written request of the other
party, it will execute and deliver such further documents and do such other
acts and things as the other party may reasonably request to effect the
purposes of this Amendment.

2.4.        Governing Law. THIS
AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL
LAWS OF THE STATE OF NEW YORK, INCLUDING, WITHOUT LIMITATION, SECTIONS 5-1401
AND 5-1402 OF THE NEW YORK GENERAL OBLIGATIONS LAW AND NEW YORK CIVIL
PRACTICE LAWS AND RULES 327(b).

2.5.        Jurisdiction; Forum.
Each party hereto consents and submits to the jurisdiction of any state court
sitting in the County of New York or federal court sitting in the Southern
District of the State of New York in connection with any dispute arising out of
or relating to this Amendment. Each party hereto waives any objection to the
laying of venue in such courts and any claim that any such action has been
brought in an inconvenient forum. To the extent permitted by law, any judgment
in respect of a dispute arising out of or relating to this Amendment may be
enforced in any other jurisdiction within or outside the United States by suit
on the judgment, a certified copy of such judgment being conclusive evidence of
the fact and amount of such judgment.

 2
 

 

2.6.        Severability. Any
term or provision of this Amendment that is invalid or unenforceable in any
situation in any jurisdiction shall not affect the validity or enforceability
of the remaining terms and provisions hereof or the validity or enforceability
of the offending term or provision in any other situation or in any other
jurisdiction.

2.7.        Successors and
Assigns. This Amendment shall be binding upon and inure to the benefit of
the respective successors and assigns of the parties; provided, however, that
no party shall assign or transfer its rights hereunder without the prior
written consent of the other parties.

2.8.        Counterparts. This
Amendment may be executed in one or more counterparts, including by facsimile,
and all of such counterparts taken together shall constitute one and the same
instrument.

[the next page is the signature page]

 3
 

 

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

	
  

  	
   

  	
  INFRASOURCE SERVICES, INC.

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  /s/ Terence R. Montgomery

  
	
   

  	
   

  	
  Name:

  	
   

  	
  Terence R. Montgomery

  
	
   

  	
   

  	
  Title:

  	
   

  	
  CFO

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  OCM PRINCIPAL OPPORTUNITIES FUND II, L.P.

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  Oaktree Capital Management, LLC,

  
	
   

  	
   

  	
   

  	
   

  	
  its General Partner

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  /s/ Michael P. Harmon

  
	
   

  	
   

  	
  Name:

  	
   

  	
  Michael P. Harmon

  
	
   

  	
   

  	
  Title:

  	
   

  	
  Managing Director

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  /s/ Adam Pierce

  
	
   

  	
   

  	
  Name:

  	
   

  	
  Adam Pierce

  
	
   

  	
   

  	
  Title:

  	
   

  	
  Assistant Vice President

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  OCM/GFI POWER OPPORTUNITIES FUND, L.P.

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  Oaktree Capital Management, LLC

  
	
   

  	
   

  	
   

  	
   

  	
  its Co-General Partner,

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  /s/ Michael P. Harmon

  
	
   

  	
   

  	
  Name:

  	
   

  	
  Michael P. Harmon

  
	
   

  	
   

  	
  Title:

  	
   

  	
  Managing Director

  
	
   

  	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  By:

  	
   

  	
  /s/ Adam Pierce

  
	
   

  	
   

  	
  Name:

  	
   

  	
  Adam Pierce

  
	
   

  	
   

  	
  Title:

  	
   

  	
  Assistant Vice President

  

 

 4
 

 

Schedule I

OCM
Principal Opportunities Fund II, L.P.

OCM/GFI Power Opportunities
Fund, L.P.
Tontine Capital Partners, L.P.

Martin Maslonka
Thomas B. Tilford
Mark C. Maslonka
Justin Campbell
Joseph Gabbard
Sidney N. Strauss
Jon Maslonka
David R. Helwig
Terence R. Montgomery
Paul M. Daily

 5

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