In this photo taken Monday, Feb. 3, 2014 and made available by Appalachian Voices, what might be coal ash is on the banks of the Dan River in Eden, N.C. Duke Energy estimates that up to 82,000 tons of ash accidentally spilled into the river Sunday, Feb. 2, 2014. Coal ash is the waste left after burning coal. It contains arsenic, mercury, lead, and over a dozen other heavy metals, many of them toxic. (AP Photo/Appalachian Voices, HO)