**Exhibit31.1**

CERTIFICATION PURSUANT TOSection 302 of the Sarbanes-Oxley Act of 2002

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

1.                                       Ihave reviewed this quarterly report on Form 10-Q of Southern copperCorporation;

2.                                       Basedon my knowledge, this quarterly report does not contain any untrue statement ofa material fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which such statements weremade, not misleading with respect to the period covered by this quarterlyreport;

3.                                       Basedon my knowledge, the condensed consolidated financial statements, and otherfinancial information included in this quarterly report, fairly present in allmaterial respects the financial condition, results of operations and cash flowsof the registrant as of, and for, the periods presented in this quarterlyreport;

4.                                       Theregistrant’s other certifying officer(s) and I are responsible for establishingand maintaining 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 we have:

a.            Designed such disclosurecontrols and procedures, or caused such disclosure controls and procedures tobe designed under our supervision, to ensure that material information relatingto the registrant, including its consolidated subsidiaries, is made known to usby others within those entities, particularly during the period in which thisquarterly report is being prepared;

b.           Designed such internalcontrol over financial reporting, or caused such internal control overfinancial reporting to be designed under our supervision, to provide reasonableassurance regarding the reliability of financial reporting and the preparationof condensed consolidated financial statements for external purposes inaccordance with generally accepted accounting principles;

c.            Evaluated the effectivenessof the registrant’s disclosure controls and procedures and presented in thisproject our conclusions about the effectiveness of the disclosure controls andprocedures as of the end of the period covered by this report based on suchevaluation; and

d.           Disclosed in thisreport any change of the registrant’s internal control over financial reportingthat occurred during the registrant’s most recent fiscal quarter that hasmaterially affected, or is reasonably likely to materially affect, the registrant’sinternal 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 on the design or operation ofinternal control over financial reporting which are reasonably likely to adverselyaffect the registrant’s ability to record, process, summarize and reportfinancial information; and

b.              Anyfraud, whether or not 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 |
|           |   |                                   |
| August 3, 2007 |   |                                   |

 

----