TORONTO, Jan. 9, 2019 /PRNewswire/ – Sierra Metals Inc. (TSX: SMT) (BVL: SMT) (NYSE AMERICAN: SMTS) (“Sierra Metals” or “the Company”) reports that the Company’s expansion plans are on track at the Bolivar Mine in Mexico. In July 2018 we announced the results of a preliminary economic assessment at Bolivar to achieve a sustainable and staged increase in mine production and mill throughput from 3,000 tonnes per day (“TPD”), to 3,600 TPD in Q1- 2019, and to 5,000 TPD by mid-2020.