Browse TRAIL Inventories

Anthracite mechanical-mining investigations :second testing of Brieden pneumatic packing machine

Microfilming maps of abandoned anthracite mines :mines of the eastern middle field

Three mine fire control projects in northeastern Pennsylvania

Pumped-slurry backfilling of inaccessible mine workings for subsidence control

Pumped-slurry backfilling of abandoned coal mine workings for subsidence control at Rock Springs, Wyo.


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