A nuclear cooling tower crashed down in Hartsville, Tennessee, on Thursday in a controlled implosion. The 540-foot tower was built in the 1970s as part of the Hartsville Nuclear Plant Project, which was discontinued. The Tennessee Valley Authority, the nation’s largest provider of public power, said the concrete from the cooling tower will be ground into smaller pieces and spread out to create a gravel lot on the site. The steel will also be recycled, TVA said. | CBS News