Copper mining pollutes river in Mexico
On August 2014, a tailings spill from the world’s third largest copper producer, Buenavista del Cobre (Grupo México), spilled 40 million liters of a toxic solution containing copper sulfate, lead and arsenic into the Sonora and Bacanuchi rivers. The tailings spread along the river for more than 250 km and affected more than 22,000 people …