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  Exhibit 10.28    
    
    EXECUTION COPY    
    

 
    FOURTH AMENDMENT TO LOAN AGREEMENT    
    

        THIS FOURTH AMENDMENT TO LOAN AGREEMENT (this "Fourth Amendment") is made and entered
into as of December 17, 2008, by and between SC MINERALS AKTIEBOLAG, a privat aktiebolag organized under the laws of Sweden (the "Lender") and
MINERA SAN CRISTÓBAL, S.A., a sociedad anónima organized under the laws of Bolivia (the
"Borrower"). The Lender and the Borrower are referred to herein collectively as the "Parties" and
individually as the "Party". 

 
 

BACKGROUND

        WHEREAS,
the Borrower and the Lender are Parties to that certain Loan Agreement, dated as of August 11, 2008, as amended by that certain First Amendment
to Loan
Agreement dated October 1, 2008, that certain Second Amendment to Loan Agreement dated October 31, 2008, and that certain Third Amendment to Loan Agreement dated November 25, 2008
(as it may be further amended, modified, supplemented or amended and restated from time to time, the "Agreement"); 

        WHEREAS,
the Lender has agreed, subject to the terms and conditions of the Agreement and this Fourth Amendment, to increase the amount of additional loans available to the Borrower by
US$25,000,000, up to a maximum aggregate principal amount of US$100,000,000 (the "Additional Loan"), upon the terms and conditions set forth therein and
herein; 

        WHEREAS,
the Borrower and Lender wish to further amend the Agreement as herein provided; 

        NOW,
THEREFORE, in consideration of the agreements and provisions herein contained, the parties hereto do hereby agree as follows: 

        1.    Definitions.    Any capitalized terms used but not otherwise defined herein shall have the meanings ascribed to
such terms in the Common Security Agreement, the Borrower Shareholders Agreement or the Agreement, as the case may be. 

        2.    Amendments to Agreement.    The Agreement is hereby amended, effective as of the date that this Fourth Amendment
becomes effective in accordance with Section 4 hereof, as follows: 

        2.1    Recitals.    The Second WHEREAS clause in the Agreement is hereby amended by deleting it in its entirety and
inserting the following in lieu thereof: 

        "WHEREAS,
the Lender has agreed, subject to the terms and conditions of this Agreement, to make loans available to the Borrower up to a maximum aggregate principal amount of
US$50,000,000 (the "Initial Loan") and additional loans up to a maximum aggregate principal amount of US$100,000,000 (the
"Additional Loan"; the Initial Loan and the Additional Loan being collectively referred to herein as the
"Loan"), all upon the terms and condition set forth herein; and" 

        2.2    Section 1.1.    Section 1.1 of the Agreement is hereby amended by deleting it in its entirety and
inserting the following in lieu thereof: 

        "1.1    Advances.    

	(a)
	Upon
satisfaction of the terms and subject to the conditions hereof, and subject to the provisions of  Section 4.2 below, the Loan shall be available for disbursement to the Borrower in one or more
advances from the date hereof through
December 31, 2008 (collectively, the "Advances") by wire transfer of Dollars, in immediately available funds, to an account designated by the
Borrower. The Lender shall not be obligated to make any Advance hereunder after December 31, 2008. The date the initial Advance is made to 

1

 

the
Borrower is herein referred to as the "Initial Disbursement Date" and each date a subsequent Advance is made to the Borrower is herein referred to
as a "Subsequent Disbursement Date."  

	(b)
	Advances
made under the Initial Loan shall be used only for working capital purposes and only in respect of line items set forth in the projected cash
sources and uses prepared by the Borrower as of August 7, 2008, a copy of which is attached hereto as Schedule A (the "Initial Loan Projected Cash
Forecast"). Advances made under the Additional Loan shall be used only for operating expenses, including, but not limited to, employee salaries, bonuses and retention payments,
in respect of line items set forth in the in the projected cash sources and uses prepared by the Borrower as of December 12, 2008, a copy of which is attached hereto as Schedule B, as
amended, modified or updated from time to time as required under the Agreement (the "Additional Loan Projected Cash Forecast" together with the Initial
Loan Projected Cash Forecast, the "Projected Cash Forecasts"); provided, however, that certain Advances of the Additional Loan in an amount equal to
$11,551,556.73 has with the consent of the Lender previously been disbursed for the payment of hedge settlement payments owed by the Borrower. When the Borrower desires an Advance hereunder, it shall
deliver a Disbursement Request in the form attached as Exhibit A (the "Disbursement Request")
specifying the amount of the Advance requested to be disbursed, the Subsequent Disbursement Date, as applicable (which shall be no less than five (5) Business Days following the date of the
Disbursement Request, unless otherwise agreed by the Lender); certifying the purpose for which the proceeds of such Advance will be used, referencing the relevant Projected Cash Forecast and the line
item of the relevant Projected Cash Forecast to which such Advance relates; certifying that the cumulative amount of Advances (assuming the making of the requested Advance) and other payments
previously made with respect to any line item in the relevant Projected Cash Forecast will not exceed 110% of the amount of such line item, and attaching reasonable evidence of the Borrower's payment
of expenses out of any prior Advance that were made by Borrower on or after the date of the previous Disbursement Request. For the avoidance of doubt, no Advance made under the Additional Loan shall
be used for payment of Financing—Cash Uses as referenced in the Additional Loan Projected Cash Forecast." 

        2.3    Section 3.2(c).    A new condition to subsequent Advances is added to the end of Section 3.2 as
follows: 

        "(x)
no Bankruptcy of Apex shall have occurred." 

        3.    Borrower Representations and Warranties.    In order to induce Lender to enter into this Fourth Amendment,
Borrower hereby represents and warrants that: 

        3.1    No Blockage Event.    At and as of the date of this Fourth Amendment, after giving effect to this Fourth
Amendment, no Blockage Event or Potential Blockage Event exists. 

        3.2    Authorization; Binding Effect.    The execution, delivery, and performance by the Borrower of this Fourth
Amendment have been duly authorized by all requisite corporate action by the Borrower. This Fourth Amendment has been duly executed and delivered by the Borrower and constitutes its legal, valid and
binding obligations, enforceable in accordance with its terms, subject to bankruptcy, insolvency and other similar laws affecting the enforcement of creditors' rights in general, and general
principles of equity. 

        3.3    Consents.    No authorization, consent, approval, license, exemption of, or filing or registration with, any
Governmental Authority, or approval or consent of any other Person, is required for the due execution, delivery or performance by the Borrower of this Agreement. 

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        3.4    Noncontravention.    Neither the execution and the delivery of this Fourth Amendment, nor the consummation of
the transactions contemplated hereby, will violate any Government Rule or Government Approval to which the Borrower is subject, violate any provision of the Borrower's Organizational Documents, or
conflict with, result in a breach of, or constitute a default under, any written agreement, contract, lease, license, instrument or arrangement to which the Borrower is a party or by which it is
bound. 

        4.    Conditions.    This Fourth Amendment shall be effective as of December 17, 2008 (the
"Effective Date") upon the fulfillment by Borrower, in a manner satisfactory to Lender, of all of the following conditions precedent set forth in
this Section 4:  

        4.1    Delivery of Other Documents.    Lender shall have received all such instruments,
documents and agreements as Lender may reasonably request, in form and substance reasonably satisfactory to Lender. 

        4.2    Execution of the Fourth Amendment.    Each of the Parties hereto shall have executed and delivered an original
counterpart of this Fourth Amendment and each of Apex Sweden and Apex Luxembourg S.À.R.L. shall have executed the acknowledgement attached hereto. 

        4.3    Representations and Warranties.    As of the Effective Date, the representations and warranties set forth in  Section 3
hereof shall be true and correct. 

        4.4    Compliance with Terms.    Borrower shall have complied in all respects with the terms hereof and of any other
agreement, document, instrument or other writing to be delivered by Borrower in connection herewith. 

        5.    Covenants.    

        5.1    Registration of Fourth Amendment.    Within twenty (20) Business Days of execution of this Fourth
Amendment, the Borrower shall cause this Fourth Amendment to be duly registered with the Central Bank of the Republic of Bolivia, as required by applicable Bolivian regulations. 

        6.    Miscellaneous.    

        6.1    Continuing Effect.    Except as specifically provided herein, the Agreement shall remain in full force and
effect in accordance with their respective terms and are hereby ratified and confirmed in all respects. 

        6.2    No Waiver.    This Fourth Amendment is limited as specified and the execution, delivery and effectiveness of
this Fourth Amendment shall not operate as a modification, acceptance or waiver of any provision of the Agreement, except as specifically set forth herein. 

        7.    Other Provisions.    

        7.1    Governing Law.    This Fourth Amendment shall be construed in accordance with and governed by the law of the
State of New York without regard for principles of conflict of law that would require the application of the law of a jurisdiction other than the State of New York. 

        7.2    Separate Counterparts; Legalization.    This Fourth Amendment may be executed in one or more counterparts, each
of which shall be deemed an original, but all of which together shall constitute one
and the same instrument. Following execution of the Fourth Amendment the Parties shall promptly take all steps to fully legalize all signatures in accordance with Bolivian law. 

[Signatures Follow.] 

3

 

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

					
	 	 	 MINERA SAN CRISTÓBAL, S.A.
	

 	
 	
By:	
 	
/s/ Jeffrey G. Clevenger

 
	 	 	Name:	 	Jeffrey G. Clevenger
	 	 	Title:	 	Director

			
	STATE OF COLORADO	 	)
	 	 	) ss.
	CITY AND COUNTY OF DENVER	 	)

        On
this            day of                    2008, personally appeared before me, a Notary
Public, Jeffrey G. Clevenger, personally known or proved to me to be the person whose name is
subscribed to the above instrument who acknowledged to me that he executed the above instrument. 

        Witness
my hand and official seal. 

			
	 
	 	  

  Notary Public

My
commission expires:        

(TO
BE APOSTILLED) 

4

 

					
	 	 	 SC MINERALS AKTIEBOLAG
	

 	
 	
By:	
 	
/s/ Akira Takeuchi

 
	 	 	Name:	 	

 
	 	 	Title:	 	

 

5

 

        In
consideration of the direct and indirect benefits that Apex Sweden and Apex Luxembourg will receive as Shareholders of the Borrower from the making of the Additional Loan, and as an
express condition to the making of the Additional Loan by the Lender, by their signature below Apex Sweden and Apex Luxembourg (i) consent to the making of the Additional Loan by the Lender in
accordance with the terms of the Agreement as amended by this Fourth Amendment, (ii) agree to comply with and be bound by the terms and provisions of the Agreement as amended by this Fourth
Amendment, including, without limitation, Section 1.8 and Article 4, (iii) agree
that any Shareholder Loan, Supplemental Loan or Consolidated Loan made by the Apex Interestholders and any other amount payable to the Shareholders by the Borrower, whether currently outstanding or
hereafter created, shall rank in payment and upon liquidation junior to the Additional Loan in accordance with the subordination terms attached to the Agreement as amended by this Fourth Amendment. 

					
	 	 	 APEX SILVER MINES SWEDEN AB.
	

 	
 	
By:	
 	
/s/ Gerald J. Malys

 
	 	 	Name:	 	Gerald J. Malys
	 	 	Title:	 	Deputy Director
	

 	
 	
 APEX LUXEMBOURG S.À. R.L.
	

 	
 	
By:	
 	
/s/ Gerald J. Malys

 
	 	 	Name:	 	Gerald J. Malys
	 	 	Title:	 	Manager

			
	STATE OF COLORADO	 	)
	 	 	) ss.
	CITY AND COUNTY OF DENVER	 	)

        On
this            day of                    2008, personally appeared before me, a Notary
Public, Gerald J. Malys, personally known or proved to me to be the person whose name is
subscribed to the above instrument who acknowledged to me that he executed the above instrument. 

        Witness
my hand and official seal. 

			
	 
	 	  

  Notary Public

My
commission expires:        

(TO
BE APOSTILLED) 

6

QuickLinks

Exhibit 10.28 EXECUTION COPY

FOURTH AMENDMENT TO LOAN AGREEMENT

BACKGROUNDExhibit 10.10

 

AMENDMENT TO CHANGE OF CONTROL AGREEMENT

 

THIS
AMENDMENT (the “Amendment”) is made as of December 30, 2008, by and
between FIRST NATIONAL BANK OF CHESTER COUNTY, a wholly-owned subsidiary of
First Chester County Corporation, and a national banking association (the “Bank”“)
and Karen D. Walter (“Executive”).

 

BACKGROUND

 

WHEREAS,
the Bank and Executive entered into an agreement, dated as of    May 6, 2005 (the “Change of Control
Agreement”) under which Executive is entitled to certain payments and benefits
in connection with Executive’s termination of employment from the Bank in
certain circumstances (“Severance”);

 

WHEREAS,
it is in the best interests of Executive and the Bank to amend the Change of
Control Agreement to comply with final regulations issued by the Internal
Revenue Service under Section 409A of the Internal Revenue Code of 1986,
as amended, (the “Code”) in order for Executive to avoid the adverse tax
consequences that would arise from a failure to comply with Code Section 409A,
including the accelerated recognition of income by Executive and an imposition
of an additional 20% excise tax on Severance payable to Executive under the
Change of Control Agreement;

 

NOW,
THEREFORE, in consideration of the premises and mutual covenants and agreements
hereinafter set forth, the parties, intending to be legally bound hereby amend
the Change of Control Agreement by eliminating Section 9 in its entirety
and replacing it with the following new Section 9:

 

9)                                     RESTRICTIONS AND LIMITATIONS.

 

For purposes of this Agreement, Executive’s
termination of employment shall mean Executive’s “separation from service” as
defined under Code Section 409A. 
Each payment under this Agreement that is determined to be subject to Section 409A
shall be treated as a separate payment. 
In no event may Executive, directly or indirectly, designate the
calendar year of any payment to be made under this Agreement.  Notwithstanding any provision of this
Agreement to the contrary, if Executive is a 
“specified employee” (as defined in Section 409A of the Code) as of
his “separation from service” (as defined in Section 409A of the Code),
then the payment of any amounts payable hereunder that are subject to Section 409A
of the Code shall be postponed in compliance with Section 409A (without
any reduction in such payments ultimately paid or provided to Executive) until
the first payroll date that occurs after the date that is six (6) months
following Executive’s “separation from service.”  Any such postponed payments shall be paid in
a lump sum to Executive on the first payroll date that occurs after the date
that is six (6) months following Executive’s “separation from service.”  If Executive dies during the postponement
period prior to the payment of the postponed amount, the amounts withheld on
account of Section 409A shall be paid to Executive’s estate within sixty
(60) days after the date of his death.

 

IN
WITNESS WHEREOF, the parties hereto have executed this Amendment as of the day
and year first written above.

 

	
   

  	
  FIRST
  NATIONAL BANK OF CHESTER COUNTY

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   /s/
  Kevin C. Quinn

  
	
   

  	
   

  	
        Kevin
  C. Quinn, President

  
	
   

  	
   

  	
   

  
	
   

  	
  EXECUTIVE

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   /s/
  Karen D. Walter

  
	
   

  	
   

  	
        Karen
  D. Walter

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