**Exhibit 31.1**

 

CERTIFICATION PURSUANT TO

Section 302of the Sarbanes-Oxley Act of 2002

 

I, Oscar Gonzalez Rochacertify that:

 
| 1.     | I have reviewed this  report on Form 10-Q of Southern Copper Corporation;                                                                                                                                                                                                                                                                                                        |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                                                                                                                                                                                                                                                                                                                  |
| 2.     | Based on my knowledge,  this report does not contain any untrue statement of a material fact or omit  to state a material fact necessary to make the statements made, in light of  the circumstances under which such statements were made, not misleading with respect  to the period covered by this report;                                                                   |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |
| 3.     | Based on my knowledge,  the financial statements, and other financial information included in this  report, fairly present in all material respects the financial condition,  results of operations and cash flows of the registrant as of, and for, the  periods presented in this report;                                                                                      |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |
| 4.     | The registrant’s other  certifying officer(s) and I are responsible for establishing and  maintaining disclosure controls and procedures (as defined in Exchange  Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial  reporting (as defined in Exchange Act Rules 13a-15(f) and  15-d-15(f)) for the registrant and have: |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |
|   | a.                                                                                                                                                                                                                                                                                                                                                                               | Designed such  disclosure controls and procedures, or caused such disclosure controls and  procedures to be designed under our supervision, to ensure that  material information relating to the registrant, including its consolidated  subsidiaries, is made known to us by others within those entities,  particularly during the period in which this report is being prepared; |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |   |
|   | b.                                                                                                                                                                                                                                                                                                                                                                                    | Designed such internal  control over financial reporting, or caused such internal control over  financial reporting to be designed under our supervision, to provide  reasonable assurance regarding the reliability of financial reporting and the  preparation of financial statements for external purposes in accordance with  generally accepted accounting principles; |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |   |
|   | c.                                                                                                                                                                                                                                                                                                                                                                                    | Evaluated the  effectiveness of the registrant’s disclosure controls and procedures and  presented in this report our conclusions about the effectiveness of the  disclosure controls and procedures, as of the end of the period covered by  this report based on such evaluation; and |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |   |
|   | d.                                                                                                                                                                                                                                                                                                                                                                                    | Disclosed in this  report any change in the registrant’s internal control over financial  reporting that occurred during the registrant’s most recent fiscal quarter  that has materially affected, or is reasonably likely to materially affect,  the registrant’s internal control over financial reporting; and |
|   |                                                                                                                                                                                                                                                                                                                                                                                  |   |
| 5.     | The registrant’s other  certifying officer(s) and I have disclosed, based on our most recent  evaluation of internal control over financial reporting to the registrant’s  auditors and the audit committee of the registrant’s board of directors (or  persons performing the equivalent functions):                                                        |
|        |                                                                                                                                                                                                                                                                                                                                                                                       |  |  |

 

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|   | a.     | All significant  deficiencies and material weaknesses in the design or operation of internal  control over financial reporting which are reasonably likely to  adversely affect the registrant’s ability to record, process, summarize and  report financial information; and |
|--------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |                                                                                                                                                                                                                                                                                    |
|   | b.     | Any fraud, whether or  not material, that involves management or other employees who have a  significant role in the registrant’s internal control over  financial reporting.                                                                                            |

 

 

November 5, 2008

 

 
|   | /s/ Oscar  Gonzalez Rocha              |
|--------|----------------------------------------|
|   | Oscar Gonzalez Rocha                   |
|   | President and  Chief Executive Officer |

 

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