Coal Barges Tied Up on the Cumberland River Waiting to Be Unloaded by Automated Equipment at the Tennessee Valley Authority Steam Plant at Cumberland City, Tennessee, near Clarksville.
It Is the Largest Type Steam Plant and One of the Most Modern in the World. The Plant Keeps One Million Tons of Coal on Hand at Any One Time 07/1974. Photographer: Corn, Jack. Original public domain image from Flickr