EPA Installs Barrier, Valve In Mine That Spilled Toxic Waste

DENVER (AP) — The U.S. Environmental Protection Agency is installing a barrier and valve inside an inactive Colorado mine to prevent another surge of toxic wastewater like a 2015 blowout that contaminated rivers in three states.
The 12-inch valve will regulate wastewater pouring from the Gold King Mine in the San Juan Mountains of southwestern Colorado, where the EPA inadvertently triggered a wastewater spill while excavating at the mine entrance in August 2015.(credit: CBS)
That spill rel