Search U.S. government technical reports digitized or harvested by TRAIL.
What the superintendent of a coal mine might do to prevent injury from falls of roof
What the mine foreman can do to prevent injury from falls of roof in coal mines
Reducing accidents from falls of roof in coal mines
What the coal miners can do to prevent injury from falls of roof
Falls of roof and coal in mines operating in the Sewickley coal bed in Monongalia County, W. Va.
How to prevent death and injury from falls of roof in coal mines
Falls of roof in mines operating in the Pittsburgh Coal Bed, West Virginia