Fraterville Mine disaster

The Fraterville Mine disaster was a coal mine explosion that occurred on May 19, 1902 near the community of Fraterville in the U.S. state of Tennessee. Official records state that 216 miners died as a result of the explosion, from either its initial blast or from the after-effects, making it the worst mining disaster in the United States' history, and remains the worst disaster in the history of Tennessee.

Source: Wikipedia — Fraterville Mine disaster (CC BY-SA 4.0)