0000950123-10-035945 Sample Contracts

Southern Copper Corporation as Issuer and Wells Fargo Bank, National Association, as Trustee SECOND SUPPLEMENTAL INDENTURE Dated as of April 16, 2010 to INDENTURE Dated as of April 16, 2010 6.750% Notes due 2040

Second Supplemental Indenture • April 19th, 2010 • Southern Copper Corp/ • Metal mining • New York

• Contract Type
  Second Supplemental Indenture
• Filed
  April 19th, 2010
• Company
  Southern Copper Corp/
• Industry
  Metal mining
• Jurisdiction
  New York

SECOND SUPPLEMENTAL INDENTURE, dated as of April 16, 2010 (this “Second Supplemental Indenture”), between Southern Copper Corporation, a corporation duly organized and existing under the laws of the State of Delaware (the “Company”), and Wells Fargo Bank, National Association, a national banking association, as trustee (the “Trustee”).

Southern Copper Corporation as Issuer and Wells Fargo Bank, National Association, as Trustee FIRST SUPPLEMENTAL INDENTURE Dated as of April 16, 2010 to INDENTURE Dated as of April 16, 2010 5.375% Notes due 2020

First Supplemental Indenture • April 19th, 2010 • Southern Copper Corp/ • Metal mining • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 19th, 2010
• Company
  Southern Copper Corp/
• Industry
  Metal mining
• Jurisdiction
  New York

FIRST SUPPLEMENTAL INDENTURE, dated as of April 16, 2010 (this “First Supplemental Indenture”), between Southern Copper Corporation, a corporation duly organized and existing under the laws of the State of Delaware (the “Company”), and Wells Fargo Bank, National Association, a national banking association, as trustee (the “Trustee”).