Photo by Maddie McGarvey @maddiemcgarvey | When a dike on a coal ash pond ruptured at the Kingston Fossil Plant in Kingston, Tennessee, in December 2008, it spilled far more toxic ash than Deepwater Horizon spilled oil. Workers who cleaned up the huge spill in Tennessee are still suffering—and dying. More than 900 workers cleaned up the coal ash spill at the Kingston plant, which is operated by the Tennessee Valley Authority; more than 200 have sued Jacobs Engineering, the cleanup contractor. Thirty-six workers have died from brain cancer, lung cancer, leukemia, and other diseases. Sixty-three years after it opened, ten years after the disastrous spill, the Kingston Fossil Plant is still burning 14,000 tons of coal a day—and producing about 1,400 tons of coal ash. A wooden cross at the site of the Kingston spill honors the cleanup workers. Photographed recently on assignment for @natgeo. For more photos from this story, follow me @maddiemcgarvey.