Drill hole highlights include: Hole E-ESP-03: 2.3% Cu, 2.6% Zn, 0.9% Pb, 0.74 gpt Au, 50.6 gpt Ag over 50.7m Hole E-ESP-03: 2.5% Cu, 5.4% Zn, 1.3% Pb, 0.81 gpt Au, 81.0 gpt Ag over 25.3m Hole E-ESP-04: 1.4% Cu, 0.4% Zn, 0.2% Pb, 1.72 gpt Au, 51.1 gpt Ag over 25.3m TORONTO, May 24, 2016 /CNW/ - Sierra Metals Inc. (TSX: SMT) (BVL: SMT) ("Sierra
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