Sierra Metals Announces Filing of NI 43-101 Technical Report on the Cusi Mine in Mexico

Sierra Metals Inc. (TSX: SMT) (BVL: SMT) (NYSE AMERICAN: SMTS) (“Sierra Metals” or “the Company”) has filed a technical report prepared in accordance with National Instrument 43-101 (“NI 43-101”) on the Cusi Mine (the “Report”). The Report supports the disclosure made by the Company in its news releases dated December 29, 2017 entitled “Sierra Metals Significantly Increases Mineral Resource Estimate for Cusi Mine, Mexico.” There are no material differences in the mineral resources contained in the Report from those disclosed in the December 29, 2017 news release.

As quoted in the press release:

The Report included mineral resources for the Cusi Mine with:

• Total Measured and Indicated Resources increased 129% to 4,557,000 tonnes from 1,990,000 tonnes previously reported, and Total Inferred Resources increased 36% to 1,633,000 tonnes from 1,200,000 tonnes previously reported
• Total Measured Mineral Resources for Cusi are 362,000 tonnes averaging 225g/t silver, 0.55% lead, 0.68% zinc, 0.13 g/t gold for a total 268 g/t AgEq

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