The worst hard-rock mining disaster in American history began a half hour before midnight on June 8, 1917, when fire broke out in the North Butte Mining Company's Granite Mountain shaft. Sparked more than two thousand feet below ground, the fire spewed flames, smoke, and poisonous gas through a labyrinth of underground tunnels. Within an hour, more than four hundred men would be locked in a battle to survive. Within three days, one hundred and sixty-four of them would be dead.
Fire and Brimst...