Sierra Metals to Invest US$28 Million for an Iron Ore ...


Apr 21, 2021· The plant is expected to produce approximately 500,000 tonnes per year of 62% iron ore fines concentrate at the Company's Bolivar Mine located in the Chihuahua State, Mexico. Engineering and test work of the final process is currently underway, and construction of the processing plant is expected to commence this June and will take ...
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