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Sierra Metals Files 40-F with SEC

TORONTO, March 22, 2018 /PRNewswire/ – Sierra Metals Inc. (TSX:SMT)(BVL:SMT) (“Sierra Metals” or the “Company”) today announced that its Form 40-F has been filed with the SEC on EDGAR (www.sec.gov) together with the Company’s Audited Consolidated Financial Statements and its Management’s…