A Costa Rican gold mine on a mountain side is experiencing sliding. Concerns are being raised now as to the stress the ground movement might be having upon the geomembrane liner for the heap leach pit. The curshed ore is stacked on the liner and irrigated with cyanide to pull out the precious metals. With some areas of the site moving a cenimeter per day, the site’s lingering cyanide is a threat to groundwater.

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