In the late nineteenth and early twentieth centuries, coal mining was the most important industry in Colorado. Coal mines served as the crucibles of empire, churning out the fuel needed to power the railroads, precious-metal mines, and smelters that…

The Hastings Mine Explosion was the deadliest mining disaster in Colorado history. Caused by the misguided striking of a match in the Hastings coal mine north of Trinidad on April 27, 1917, the blast killed 121 coal miners; one other worker died of…