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Pittsburgh coal seam
Maryland Bureau of Mines for Theperiod January 1 to December 31, 1932, in Compliance with Therequirements of the Maryland Mining Law
A Passage Through Time & the Mountains
Geology and Mining Activities
Isotopic Composition of Dissolved Inorganic Carbon in Underground Mine Discharges of the Northern Appalachian Basin
Summary of Investigations in Late Paleozoic Geology of Ohio1 2
Section V Effects of Mining on Current Watershed
B56 Norling 1958.Pdf
Environmental Effects of Slaking of Surface Mine Spoils Eastern & Central United States
Dolomite and Siliciclastic Dikes and Sills in Marginal-Marine Cretaceous Coals of Central Utah
Congressional Record—Senate S3869
Pittsburgh-Geology-GSA
Factors Predictive of Roof Instability in Addition to the Exisiting
Cost Optimization for Mine Void Stabilization Projects: a Deep Mine Case Study
Cnneilsville Vicinity =* 7 C3 •*" T" C3 Pennsy1vania H*
Well and Spring Water Quality Assessment in the Pike Run Watershed, PA
VII. Geology and Hydrology of the Bituminous Coalfields
Hon. Albert C. Ritchie Governor of Maryland
Three Rivers Conservation Plan – Final – January 2004
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