EPA, Sen. Udall launch push to clean up West’s toxic mines

A snow-covered tailings heap on Boreas Pass leaks toxic cadmium and zinc, deadly for fish, into creeks that flow down through Breckenridge and, eventually, into Denver’s Dillon Reservoir.

This mining mess from a century ago sat largely ignored until Friday, when national, state and local authorities trudged in and eyed it as a potential demonstration project to jumpstart cleanups of thousands of festering mines around Colorado and the West.

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