Sierra Metals to Release Q1-2018 Financial Results on May 9, 2018

Shareholder Conference Call and Webcast on May 11, 2018TORONTO, April 30, 2018 /PRNewswire/ - Sierra Metals Inc. (TSX: SMT) (NYSE American: SMTS) (BVL: SMT) ("Sierra Metals" or the "Company") will release it's 2018 first quarter consolidated financial results on Wednesday, May 9,...