Search U.S. government technical reports digitized or harvested by TRAIL.
Explosions in Tennessee coal mines
Explosions in Pennsylvania coal mines, 1870-1932
Coal-mine fatalities in Kentucky in 1931, 1932, and 1933
Coal-mine explosions and coal- and metal-mine fires in the United States in 1949
Coal-mine explosions and coal- and metal-mine fires in the United States in 1950, 1951, and 1952