Browse TRAIL Inventories

Microfilming maps of abandoned anthracite mines :mines in the Lackawanna Basin, northern anthracite field

Mine subsidence--extent and cost of control in a selected area.

Microfilming maps of abandoned anthracite mines :mines in the Western middle anthracite field

Methane emission rate studies in a central Pennsylvania mine

Selected geologic factors affecting mining of the Pittsburgh coalbed

Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia

Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa.


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