Search U.S. government technical reports digitized or harvested by TRAIL.
Anthracite mechanical-mining investigations :second testing of Brieden pneumatic packing machine
Seismic methods of detecting and delineating subsurface subsidence
Mine subsidence--extent and cost of control in a selected area.
Subsidence due to underground mining(in two parts)
Subsidence due to underground mining(in two parts)
Pumped-slurry backfilling of inaccessible mine workings for subsidence control