CASE STUDY: COEUR ROCHESTER SILVER MINE A Silver Lining for Mining The mining industry is a prime candidate for substantial energy savings due to its high electric loads, large equipment and constant hours of operation. Coeur Rochester Silver Mine in northern Nevada, one of the largest in the world, installed a variable speed drive (VSD) on a 700-horsepower pump that operates almost continually to transport cyanide solution to the holding tank. This decision resulted in an energy-saving mine that earned a rebate from NV Energy and is projected to save move than one million kWh annually. Coeur Rochester’s mining operation includes crushing extracted ore and depositing it onto a leach pad. A secondary system sends what is known as a barren solution to the le

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