The Savannah River Site, in South Carolina, is home to the radioactive fuel that powers hydrogen bombs. It’s one of the most important nuclear facilities in the United States, and right now the workers who keep it safe are on strike.

“Most people don’t know about this place, but they would be affected if anything were to occur,” Mathias Miller, president of the United Professional Pro-Force of Savannah River, Local 125, told me. “It’s the nastiest stuff man’s ever made, and we sit on top of it every single day.”

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