Search U.S. government technical reports digitized or harvested by TRAIL.
Method of increasing lump-coal production with especial reference to Southern Illinois
Some safety records in Illinois coal mines
Review of Illinois coal-mine fatalities for 1933
Explosions in Illinois coal mines 1883 to 1932
Fatalities in Illinois coal mine, 1934-36
Coal-mine mechanization and accident-frequency rates of hand and mechanical loading in Illinois