Exhibit 99.1

PAN AMERICAN SILVER PROVIDES AN UPDATE ON THE SAN

VICENTE MINE

Vancouver, British Columbia – May 3, 2011 -- Pan American Silver Corp. (PAAS: NASDAQ; PAA: TSX) (“Pan American” or the “Company”) today provided an update on the situation in Bolivia and the San Vicente mine.

On May 1, Bolivian President Evo Morales announced the formation of a multi-disciplinary committee to re-evaluate several pieces of legislation, including the mining law.  However, Mr. Morales made no reference to reviewing or terminating agreements with private mining companies.  Pan American operates the San Vicente mine in Bolivia under the terms of a joint-venture contract with the state-owned mining company COMIBOL.

Operations at San Vicente have continued to run normally under Pan American’s administration and were largely unaffected by the media reports referenced in the Company’s April 19 press release, and the Company expects normal operations to continue status quo.

The Company would like to acknowledge and thank its employees and contractors in Bolivia, the San Vicente union, the surrounding community leaders and the local authorities who unilaterally expressed their support for Pan American’s continued activities in Bolivia.

About Pan American Silver

Pan American Silver’s mission is to be the world’s largest low-cost primary silver mining company by increasing its low cost silver production and silver reserves.  The Company currently has seven silver mining operations in Mexico, Peru, Argentina and Bolivia.  Pan American is also the operator of the La Preciosa joint-venture in México and the owner of the world-class Navidad silver project in Argentina.

Information Contact

Kettina Cordero

Coordinator, Investor Relations

(604) 684-1175

info@panamericansilver.com

www.panamericansilver.com

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

CERTAIN OF THE STATEMENTS AND INFORMATION IN THIS NEWS RELEASE CONSTITUTE “FORWARD-LOOKING STATEMENTS” WITHIN THE MEANING OF THE UNITED STATES PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 AND “FORWARD-LOOKING INFORMATION” WITHIN THE MEANING OF APPLICABLE CANADIAN PROVINCIAL SECURITIES LAWS RELATING TO THE COMPANY AND ITS OPERATIONS.  ALL STATEMENTS, OTHER THAN STATEMENTS OF HISTORICAL FACT, ARE FORWARD-LOOKING STATEMENTS.  WHEN USED IN THIS NEWS RELEASE THE WORDS, “BELIEVES”, “EXPECTS”, “INTENDS”, “PLANS”, “FORECAST”, “OBJECTIVE”, “OUTLOOK”, “POSITIONING”, “POTENTIAL”, “ANTICIPATED”, “BUDGET” AND OTHER SIMILAR WORDS AND EXPRESSIONS, IDENTIFY FORWARD-LOOKING STATEMENTS OR INFORMATION.  THESE FORWARD-LOOKING STATEMENTS OR INFORMATION RELATE TO, AMONG OTHER THINGS: THE NATURE AND SCOPE OF THE RE-EVALUATION OF LEGISLATION  IN BOLIVIA, THE RESULTS OF SUCH RE-EVALUATION ON THE COMPANY AND ITS OPERATIONS IN BOLIVIA AND THE ANTICIPATED TIMING OF SUCH RE-EVALUATION; THE EFFECTS OF LAWS, REGULATIONS AND GOVERNMENT POLICIES AFFECTING PAN AMERICAN’S OPERATIONS OR POTENTIAL FUTURE OPERATIONS IN BOLIVIA; AND THE EXPECTED CONTINUED OPERATIONS OF THE SAN VICENTE MINE IN A NORMAL AND UNINTERRUPTED FASHION.

THESE STATEMENTS REFLECT THE COMPANY’S CURRENT VIEWS WITH RESPECT TO FUTURE EVENTS AND ARE NECESSARILY BASED UPON A NUMBER OF ASSUMPTIONS AND ESTIMATES THAT, WHILE CONSIDERED REASONABLE BY THE COMPANY, ARE INHERENTLY SUBJECT TO SIGNIFICANT BUSINESS, ECONOMIC, COMPETITIVE, POLITICAL AND SOCIAL UNCERTAINTIES AND CONTINGENCIES.  MANY FACTORS, BOTH KNOWN AND UNKNOWN, COULD CAUSE ACTUAL RESULTS, PERFORMANCE OR ACHIEVEMENTS TO BE MATERIALLY DIFFERENT FROM THE RESULTS, PERFORMANCE OR ACHIEVEMENTS THAT ARE OR MAY BE EXPRESSED OR IMPLIED BY SUCH FORWARD-LOOKING STATEMENTS CONTAINED IN THIS NEWS RELEASE AND THE COMPANY HAS MADE ASSUMPTIONS AND ESTIMATES BASED ON OR RELATED TO MANY OF THESE FACTORS.  SUCH FACTORS INCLUDE, WITHOUT LIMITATION: FLUCTUATIONS IN CURRENCY MARKETS (SUCH AS THE CANADIAN DOLLAR, PERUVIAN SOL, MEXICAN PESO, ARGENTINE PESO AND BOLIVIAN BOLIVIANO VERSUS THE U.S. DOLLAR); RISKS RELATED TO THE TECHNOLOGICAL AND OPERATIONAL NATURE OF THE COMPANY’S BUSINESS; CHANGES IN NATIONAL AND LOCAL GOVERNMENT, LEGISLATION, TAXATION, CONTROLS OR REGULATIONS AND  POLITICAL OR ECONOMIC DEVELOPMENTS IN CANADA, THE UNITED STATES, MEXICO, PERU, ARGENTINA, BOLIVIA OR OTHER COUNTRIES WHERE THE COMPANY MAY CARRY ON BUSINESS IN THE FUTURE; RISKS AND HAZARDS ASSOCIATED

1500 - 625 Howe Street, Vancouver, BC, Canada  V6C 2T6     Tel 604-684-1175  Fax 604-684-0147

WITH THE BUSINESS OF MINERAL EXPLORATION, DEVELOPMENT AND MINING (INCLUDING ENVIRONMENTAL HAZARDS, INDUSTRIAL ACCIDENTS, UNUSUAL OR UNEXPECTED GEOLOGICAL OR STRUCTURAL FORMATIONS, PRESSURES, CAVE-INS AND FLOODING); INADEQUATE INSURANCE, OR INABILITY TO OBTAIN INSURANCE, TO COVER THESE RISKS AND HAZARDS; EMPLOYEE RELATIONS; RELATIONSHIPS WITH AND CLAIMS BY LOCAL COMMUNITIES AND INDIGENOUS POPULATIONS; AVAILABILITY AND INCREASING COSTS ASSOCIATED WITH MINING INPUTS AND LABOUR; THE SPECULATIVE NATURE OF MINERAL EXPLORATION AND DEVELOPMENT, INCLUDING THE RISKS OF OBTAINING NECESSARY LICENSES AND PERMITS AND THE PRESENCE OF LAWS AND REGULATIONS THAT MAY IMPOSE RESTRICTIONS ON MINING; DIMINISHING QUANTITIES OR GRADES OF MINERAL RESERVES AS PROPERTIES ARE MINED; GLOBAL FINANCIAL CONDITIONS; CHALLENGES TO, OR DIFFICULTY IN MAINTAINING, THE COMPANY’S TITLE TO PROPERTIES AND CONTINUED OWNERSHIP THEREOF; INCREASED COMPETITION IN THE MINING INDUSTRY FOR PROPERTIES, EQUIPMENT, QUALIFIED PERSONNEL, AND THEIR COSTS; AND THOSE FACTORS IDENTIFIED UNDER THE CAPTION “RISKS RELATED TO PAN AMERICAN’S BUSINESS” IN THE COMPANY’S MOST RECENT FORM 40-F AND ANNUAL INFORMATION FORM FILED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION AND CANADIAN PROVINCIAL SECURITIES REGULATORY AUTHORITIES.  INVESTORS ARE CAUTIONED AGAINST ATTRIBUTING UNDUE CERTAINTY OR RELIANCE ON FORWARD-LOOKING STATEMENTS.  ALTHOUGH THE COMPANY HAS ATTEMPTED TO IDENTIFY IMPORTANT FACTORS THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY, THERE MAY BE OTHER FACTORS THAT CAUSE RESULTS NOT TO BE AS ANTICIPATED, ESTIMATED, DESCRIBED OR INTENDED.  THE COMPANY DOES NOT INTEND, AND DOES NOT ASSUME ANY OBLIGATION, TO UPDATE THESE FORWARD-LOOKING STATEMENTS OR INFORMATION TO REFLECT CHANGES IN ASSUMPTIONS OR CHANGES IN CIRCUMSTANCES OR ANY OTHER EVENTS AFFECTING SUCH STATEMENTS OR INFORMATION, OTHER THAN AS REQUIRED BY APPLICABLE LAW.