VANCOUVER, March 31, 2015 /CNW/ - Sierra Metals Inc. (TSX:SMT)(BVL:SMT) ("Sierra Metals" or the "Company") is pleased to announce that Yauricocha's combined Measured and Indicated Mineral Resources have been increased by over 5,270,000 tonnes, representing an 86% increase over the previously reported mineral resource. Over the same period, Mineral
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