The Fly Ash Threat

An aerial image before the Kingston, Tenn., ash slide on Dec. 22, 2008.

On Dec. 30, 2008, the Emory River is inundated with coal ash slurry after a containment pond ruptured.

Simple storage and loading would require new permitting and safety procedures if the EPA classifies fly ash as a hazardous material.

A microscopic view of the controversial material.

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