EPA drills into American Tunnel to unravel mine pollution mystery

Driven by desire to know what lies beneath, crews bore deeper every day

SILVERTON – Deep down, hundreds of feet below the Earth’s surface, the Environmental Protection Agency is looking for answers to one of the biggest mysteries in the Superfund site of mines around Silverton polluting the headwaters of the Animas River.

EPA crews last week started to bore into the ground in what is expected to be a more than 500-foot journey to reach the American Tunnel in hopes of better understanding a complex network of mines in the upper Cement Creek basin, a tributary of the Animas.

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