Zinc

October 7, 2016--EPA probes toxic Colorado mine tunnels, investigates possible harm to human health (Denver Post)

Sloshing knee-deep through acid orange muck in a dark mining tunnel, an EPA crew wearing air monitors and headlamps peered at a massive concrete plug, one of 13 installed in these cored-out mountains above Silverton. They are wrestling with the Environmental Protection Agency’s riskiest problem as post-Gold King disaster cleanup begins: whether to try to contain toxic mine


June 7, 2013--Old mines, today’s water Environmental agency cleans up Rico’s mineral legacy (Cortez Journal)

“We all live downstream,” as the saying goes, and that becomes more of a concern when abandoned mines are upstream, which is the case near the headwaters of the Dolores River. North of Rico along the river is the Rico-Argentine Mine complex, left over from gold and silver mining efforts in the 1930s and ’40s.


December 15, 2010--Elevated zinc concentrations in Colorado waterway likely a result of climate change (Science Daily)

Rising concentrations of zinc in a waterway on Colorado's Western Slope may be the result of climate change that is affecting the timing of annual snowmelt, says a new study led by the University of Colorado at Boulder.


May 18, 2010--Mill north of Silverton may reopen (Durango Herald)

Three years after purchasing the Howardsville Mill north of Silverton, Lakewood-based Colorado Goldfields announced it hopes to reopen operations sometime this summer. A permit to reactivate the mill is expected to come this month.


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