"In Fish-Kill Mystery, EPA Scientist Points at Shale Drilling"
EPA's official investigation of a massive 2009 fish kill in West Virginia's Dunkard Creek ended by blaming the pollution squarely on Consol Energy's Blacksville No. 2 mine. But an EPA biologist said that coal mine drainage alone was not enough to explain the problem -- and that contamination of mine pools by methane and water from the Marcellus Shale formation was possibly an additional cause.