Search U.S. government technical reports digitized or harvested by TRAIL.
Hydraulic Mine Filling: Its Use in the Pennsylvania Anthracite Fields, A Preliminary Report
Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania
Analyses of Pennsylvania Anthracitic Coals
Flood-Prevention Projects at Pennsylvania Anthracite Mines: Progress Report for 1945
Water Pools in Pennsylvania Anthracite Mines
Data on Pumping at the Anthracite Mines of Pennsylvania
Preparation Characteristics of Pennsylvania Anthracite from the Bottom Red Ash Bed, Northern Field
Pennsylvania Anthracite Refuse: A Survey of Solid Waste from Mining and Preparation