Geologic Factors in Coal Mine Roof Stability: A Progress Report

The Geologic Character of Some Coal Wants at the Westland Mine in Southwestern Pennsylvania

Subsidence Over Four Room-and-pillar Sections in Southwestern Pennsylvania

Air-sealing Coal Mines to Reduce Water Pollution

Roof Rock Structures and Related Roof Support Problems in the Pittsburgh Coalbeds of Southwestern Pennsylvania

Geologic and Ground-control Aspects of an Experimental Shortwall Operation in the Upper Ohio Valley

Feasibility of Water Diversion and Overburden Dewatering: Issues 9024-9034

Geologic Structures in Coal Mine Roof

Geotechnical Aspects of Roof and Pillar Stability in a Georgia Talc Mine

The Character of Five Selected LANDSAT Lineaments in Southwestern Pennsylvania

The Relation of Geology to Mine Roof Conditions in the Pocahontas No. 3 Coalbed

The Effect of Atmospheric Pressures on the Oxygen Level in a Sealed Mine

Roof Control of Stress-relief Jointing Near Outcrops in Central Appalachian Drift Coal Mines

Leakage Across a Bituminous Coal Mine Barrier

Leakage Across a Bituminous Coal Mine Barrier

Hillseam Geology and Roof Instability Near Outcrop in Eastern Kentucky Drift Mines

Geotechnology in Slate Quarry Operations

Electrowinning Aluminum from Aluminum Chloride: Operation of a Single-compartment Cell, Issues 7350-7359

Report of Investigations: no.7381 to date

Electrowinning Aluminum from Aluminum Chloride: Operation of a Single-compartment Cell, Issues 7341-7356