**Exhibit31.1**

 

CERTIFICATIONPURSUANT TO

Section 302 of theSarbanes-Oxley Act of 2002

 

I, Oscar Gonzalez Rocha,President and Chief Executive Officer of Southern Copper Corporation, certifythat:

 

1.     Ihave reviewed this annual report on Form 10-K of Southern Copper Corporation;

 

2.     Basedon my knowledge, this annual report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this annual report;

 

3.     Basedon my knowledge, the financial statements, and other financial informationincluded in this annual report, fairly present in all material respects thefinancial condition, results of operations and cash flows of the registrant asof, and for, the periods presented in this annual report;

 

4.     The registrant’sother certifying officers and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange ActRules 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 registrantand have:

 

a.     Designedsuch disclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to the registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this annual report is being prepared;

 

b.     Designedsuch internal control over financial reporting, or caused such internal controlover financial reporting to be designed under our supervision, to providereasonable assurance regarding the reliability of financial reporting and thepreparation of financial statements for external purposes in accordance withgenerally accepted accounting principles;

 

c.     Evaluatedthe effectiveness of the registrant’s disclosure controls and procedures andpresented in this report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisreport based on such evaluation; and

 

d.     Disclosedin this report any change in the registrant’s internal control over financialreporting that occurred during the registrant’s fourth fiscal quarter that hasmaterially affected, or is reasonably likely to materially affect, theregistrant’s internal control over financial reporting; and

 

5.     Theregistrant’s other certifying officer(s) and I have disclosed, based on ourmost recent evaluation of internal control over financial reporting to theregistrant’s auditors and the audit committee of the registrant’s board ofdirectors (or persons performing the equivalent functions):

 

a.     Allsignificant deficiencies and material weaknesses in the design or

 

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operation of internal control over financial reportingwhich are reasonably likely to adversely affect the registrant’s ability torecord, process, summarize and report financial information; and

 

b.          anyfraud, whether or nor material, that involves management or other employees whohave a significant role in the registrant’s internal control over financialreporting.

 

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

 

 

Date: March 6,2006

 

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