The Ludlow Massacre, a part of the wider Colorado Coalfield War, was the deadliest strike in American history. This episode we talk all about the rock that burns, how to get it out of the ground, and the dangers that come with it. Sources: Andrews, Thomas G. Killing for Coal: America’s Deadliest Labor War. Harvard University Press, 2010. Freese, Barbara. Coal: A Human History. Basic Books, 2016. Sinclair, Upton. King Coal. BIBLIOTECH PRESS, 2022.