Search U.S. government technical reports digitized or harvested by TRAIL.
Regulations and Inspection Prevent Accidents from Falls of Roof
Mining Methods and Costs, Black Rock Tungsten Mine, Wah Chang Mining Corp., Mono County, California
Design and Applications of Some Mathematical Models for Mine-Systems Analysis
A Petrofabric Study of Tectonic and Mining-Induced Deformations in a Deep Mine
Coal Mining Techniques in the Federal Republic of Germany - 1971