The Tennessee Valley Authority plant's coal-ash spill grabbed headlines in December, but an Indiana town is still reeling from a spill two years ago. The Gibson power plant spilled ash into a nearby wildlife preserve and contaminated drinking water for East Mount Carmel, Ind. Selenium, a toxic byproduct of coal, has been found at more than 20 U.S. sites where coal ash is suspected or has been shown to have polluted water. Lisa Jackson, the administrator of the Environmental Protection Agency, has said coal ash is a priority.
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