Between 2015 and 2017, mercury and other contaminants were detected in the river system next to the mine, located at high elevation in northwestern Argentina, near the border with Chile. The mine, which uses heap leach processing in which ore is piled on a concrete pad and rinsed with cyanide to extract gold and silver, was linked to three spills and Barrick paid millions of dollars in fines.
read more... https://financialpost.com/commodities/mining/un-barrick-gold-veladero-mine-argentina-toxic-spills
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