Search U.S. government technical reports digitized or harvested by TRAIL.
Relation of lead poisoning in Utah to mining
Quarry problems from the engineer's viewpoint
Stop, look and listen! :the roof is going to fall
How are men killed in mines by falls of roof and coal?
Area of unsupported roof in coal mines :conditions and factor[s] for consideration
Methods and costs of mining at Barr mine, Tri-State zinc and lead district
Electrical blasting in sinking Montreal no. 5 shaft :also some safety practices at the Montreal mine
Mining ore in open stopes, Central and Eastern United States