SIERRA METALS REPORTS RECORD SILVER AND COPPER PRODUCTION IN FOURTH QUARTER 2014 AND ANNOUNCES 2015 PRODUCTION OUTLOOK Vancouver, BC – January 27, 2015 – Sierra Metals Inc. (TSX: SMT) (BVL: SMT) (“Sierra Metals” or “the Company”) reports production for the fourth quarter (“Q4”) and year ended December 31, 2014 from its three underground mines in Latin…