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Costs of closing, cleaning toxic coal ash pits grows clearer (copy)
File -- In this Thursday, Jan. 14, 2016, photo, a drainage pipe that was the original culprit of the coal ash spill is shown at the Dan River Steam Station in Eden, N.C. Duke Energy Corp. is digging up and hauling away from riverbanks the toxic coal residues two years after one of the worst coal-ash spills in U.S. history.
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