Pan American Silver Corp. ("Pan American") and Minefinders Corporation Ltd. ("Minefinders") are pleased to announce that they have entered into a definitive agreement (the "Arrangement Agreement") pursuant to which Pan American will acquire all of the issued and outstanding common shares of Minefinders by way of a plan of arrangement. Under the terms of the Arrangement Agreement, Minefinders shareholders will be entitled to elect to receive, in exchange for each Minefinders share held, either: (i) 0.55 shares of Pan American and $1.84 in cash; (ii) 0.6235 shares of Pan American; or (iii) $15.60 in cash, subject to pro-ration under total aggregate cash and share pools of approximately $176 million and approximately 53 million Pan American shares, respectively, on a fully-diluted basis. Assuming full pro-ration, Minefinders shareholders will receive 0.55 shares of Pan American and $1.84 in cash in exchange for each Minefinders share held.