The coal industry has spent hundreds of millions of dollars to get out the message of “clean coal,” through front groups like the American Coalition for Clean Coal Electricity, campaign contributions, and an army of lobbyists. But the devastating December 22, 2008 coal ash slurry spill of the Kingston Fossil Plant in rural Tennessee broke through the cacophony of clean coal carolers. This ThinkProgress Wonk Room video is a stark reminder that in reality, coal isn’t clean.