Stock Photo - Sylvester, West Virginia - Bulldozers spread coal sludge on a coal impoundment dam at Massey Energy´s Elk Run complex Impoundments hold liquid and solid wastes from the coal mining process, including toxic chemicals that can seep into local water supplies Occasional failures of impoundment dams have caused loss of life and severe environmental problems

Stock Photo: Sylvester, West Virginia - Bulldozers spread coal sludge on a coal impoundment dam at Massey Energy's Elk Run complex  Impoundments hold liquid and solid wastes.

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