TORONTO, Jan. 21, 2013 /CNW/ - Sierra Metals Inc. (TSX-V:SMT) (BVL:SMT) ("Sierra Metals" or the "Company") is pleased to announce its 2012 annual and fourth quarter production results and to issue production guidance for 2013.Press Release Highlights: Total of 1,269,849 tonnes processed in 2012 compared to 657,086 tonnes in 2011. An increase of 93
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