Search U.S. government technical reports digitized or harvested by TRAIL.
Instruction handbook: fundamentals of accident prevention for coal-mine supervisors.
Coal-mine hazards caused by electrolysis
Injury experience in coal mining, 1964 :analysis of mine safety factors, related employment, and production data
Injury experience in coal mining, 1965 :analysis of mine safety factors, related employment, and production data
Injury experience in coal mining, 1966 :analysis of mine safety factors, related employment, and production data