Browse TRAIL Inventories

Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence

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


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