Search U.S. government technical reports digitized or harvested by TRAIL.
Mine-fan signal alarms and power releases
Falls of roof :the no. 1 killer in bituminous-coal mines
Why men were killed at Pennsylvania anthracite mines in 1950
Administration of the Federal Coal-Mine Safety Act
Administration of the Federal Coal-Mine Safety Act, calendar year 1955
Administration of the Federal Coal-Mine Safety Act :calendar year 1954
Administration of the Federal Coal-Mine Safety Act, calendar year 1956
Administration of the Federal Coal-Mine Safety Act, calendar year 1957
Administration of the Federal Coal-Mine Safety Act, 1952-58
Administration of the Federal Coal-Mine Safety Act, 1952-60