39 WorldWide Drilling Resource ® SEPTEMBER 2020 Production Resumes at the Cusi Silver Mine Adapted from Information by Sierra Metals, Inc. Sierra Metals Inc. has restarted operations and production at its Cusi Silver Mine in Chihuahua, Mexico. Luis Marchese, CEO of Sierra Metals said, "I am very pleased that we are restarting operations and production at Cusi.” The management team expects to continue ramping up production to its targeted rate by the end of the year, and plans to update studies in the second half of the year for the next phase. The Cusi Mine had been in care and maintenance mode since April 1, 2020, due to a government-mandated shutdown to contain the pandemic. This period allowed the company to complete an optimized review of the entire mine operation. The review resulted in an updated interpretation of the geological system at the Santa Rosa de Lima structure from a stockwork system to a vein model system. The Cusi Mine is located in the Sierra Madre Occidental Mountain Range with exploration focused primarily on the Cusi Fault and the Santa Rosa de Lima vein. The fault extends on the company’s property for about seven miles, but it isn’t the only fault they are interested in. Additional exploration efforts are being conducted in the San Nicolas and Border Faults. Sierra Metals is currently drilling from the surface targeting its recently discovered high-grade silver zone in an area called Northeast - Southwest System of Epithermal Veins adjacent to the Santa Rosa de Lima zone. Plans to drill an additional 3200 feet to gain a better understanding of the mineralization in the new zone are underway. The company is also planning to develop a pipeline of open-pit and underground opportunities through a district-scale study incorporating various geological data layers, as well as historical drill hole and mine data. MIN
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