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FIRST AMENDMENT
 TO
 JBIC LOAN AGREEMENT




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FIRST AMENDMENT TO JBIC LOAN AGREEMENT
 First Amendment sociedad anónima
abierta Borrower JBIC JBIC Agent Parties
  JBIC Loan
Agreement




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SOCIEDAD MINERA CERRO VERDE S.A.A.By:
    
    /s/ Christian Moran

Name: Christian MoranTitle: Attorney in FactJAPAN BANK FOR INTERNATIONAL COOPERATIONBy:
    
    /s/ Akira Ogawa

Name: Akira OgawaTitle: Director GeneralSUMITOMO MITSUI BANKING CORPORATIONBy:
    
    /s/ F. Kusakabe

Name: F. KusakabeTitle: Senior Vice President, Head of CreditControl & Administration, Group StructuredFinance Dept.




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SCHEDULE 1
 Annex D
 
 
 To:
    
    Japan Bank for International Cooperation
4-1, Ohtemachi 1-chome
Chiyoda-ku, Tokyo 100-8144, Japan
Attn: Director General
Energy and Natural Resources Finance Department
 Dear Sirs:
As required by Section 9.01(b) of the JBIC Loan Agreement dated September 30th, 2005
between Japan Bank for International Cooperation, as Lender, Sociedad Minera Cerro Verde S.A.A., as
Borrower, and Sumitomo Mitsui Banking Corporation, as JBIC Agent (JBIC Loan to Cerro Verde), please
find enclosed the environmental monitoring form prepared by the Borrower for the year ended on
December 31, [____].
 In addition, except as disclosed below, we hereby certify that, as of the date hereof, the Borrower
is not aware of any violation of the JBIC Environmental Guidelines.
 Yours faithfully,




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ENVIRONMENTAL MONITORING FORM
 (Page 1 of 2)
 1. Water Quality (Surface Water; Río Chili, Water Intake Point)
 Referred
    
    
    RemarksMeasured Value
    
    
    Measured Value
    
    
    Standards/Criteria
    
    
    (Frequency,ITEM
    
    Unit
    
    
    (Average)
    
    
    (Maximum)
    
    
    (if any)
    
    
    Method, etc.)pH
    
    
    EC
    
    μS/cmTemperature
    
    
    °CAcidity
    
    mg/L
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    (CaCO3)Alkalinity
    
    mg/LTDS
    
    mg/LTSS
    
    mg/L
 2. Water Quality (Groundwater; Downstream of waste rock dump place)
 Referred
    
    
    RemarksMeasured Value
    
    
    Measured Value
    
    
    Standards/Criteria
    
    
    (Frequency,ITEM
    
    Unit
    
    
    (Average)
    
    
    (Maximum)
    
    
    (if any)
    
    
    Method, etc.)Water LevelpH
    
    
    DO
    
    mg/LEC
    
    μS/cmTemperature
    
    
    °CAcidity
    
    mg/L
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    (CaCO3)Alkalinity
    
    mg/LTDS
    
    mg/LTSS
    
    mg/LAl
    
    mg/LAs
    
    mg/LCo
    
    mg/LCu
    
    mg/LFe
    
    mg/LMg
    
    mg/LZn
    
    mg/LPb
    
    mg/LSulfates
    
    mg/L




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ENVIRONMENTAL MONITORING FORM
 (page 2 of 2)
 3. Water Quality (Groundwater; Downstream of tailings dam)
 Referred
    
    
    RemarksMeasured Value
    
    
    Measured Value
    
    
    Standards/Criteria
    
    
    (Frequency,ITEM
    
    Unit
    
    
    (Average)
    
    
    (Maximum)
    
    
    (if any)
    
    
    Method, etc.)Water LevelpH
    
    
    DO
    
    mg/LEC
    
    μS/cmTemperature
    
    
    °CAcidity
    
    mg/L
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    (CaCO3)Alkalinity
    
    mg/LTDS
    
    mg/LTSS
    
    mg/LAl
    
    mg/LAs
    
    mg/LCo
    
    mg/LCu
    
    mg/LFe
    
    mg/LMg
    
    mg/LZn
    
    mg/LPb
    
    mg/LSulfates
    
    mg/L