Sierra Metals has updated the Preliminary Economic Assessment (PEA) for its Bolivar copper-silver mine in Mexico, incorporating iron ore concentrate production to increase the after-tax NPV to US$361 million. The strategy aims to process tailings to produce 5.7 million tonnes of 62% iron concentrate annually, supporting a phased expansion to 10,000 tonnes per day. Read the full story at Mining.com .
Sierra updates Bolivar copper-silver PEA to include iron ore Sierra updates Bolivar copper-silver PEA to inc...
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