Mexican environmental authorities are pressing charges against mining company Grupo Mexico over an acid spill in northwestern Sonora state that contaminated two rivers and left thousands of people without drinking water.
Mexican miner and infrastructure company Grupo Mexico expects to produce 820 000 t of copper in 2013, down 3.5% from its previous estimate, the president of the company's Minera Mexico subsidiary said on Tuesday.
Grupo Mexico sees copper output...
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