A machine sifts coal ash at the ash pond at Santee Cooper's Jefferies power generating station just outside Moncks Corner, S.C., on Wednesday, Feb. 26, 2014. The finer material in the pile at the ... more 
A machine sifts coal ash at the ash pond at Santee Cooper's Jefferies power generating station just outside Moncks Corner, S.C., on Wednesday, Feb. 26, 2014. The finer material in the pile at the right is trucked from the site and then used in the manufacture of concrete. Santee Cooper is South Carolina's state-owned electric and water utility. (AP Photo/Bruce Smith) less 
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Associated Press | Photo By Bruce Smith
Fri, Feb 28, 2014 2:15 PM EST