Coal Ash Plant (IMAGE) Duke University Caption This is the TVA Kingston Fossil Plant in Roane County, Tenn. was the site of a 2008 spill of more than 1 billion gallons of coal ash slurry. Credit Duke University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.