Dan Bender, with the La Plata County Sheriff's Office, takes a water sample from the Animas River near Durango, Colo., Thursday, Aug. 6, 2015. The U.S. Environmental Protection Agency said that a cleanup team was working with heavy equipment Wednesday to secure an entrance to the Gold King Mine. Workers instead released an estimated 1 million gallons of mine waste into Cement Creek, which flows into the Animas River. (Jerry McBride/The Durango Herald via Associated Press) **FILE**
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