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Selected geologic factors affecting mining of the Pittsburgh coalbed

Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

Methane gas content of the Mary Lee group of coalbeds, Jefferson, Tuscaloosa, and Walker Counties, Ala.

Geology of the Mary Lee Group of coalbeds, Black Warrior coal basin, Alabama

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

Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.

Directional drilling for coalbed degasification :program goals and progress in 1978

Direct method determination of the gas content of coal : procedures and results

Drilling a horizontal coalbed methane drainage system from a directional surface borehole

Site-specific and regional geologic considerations for coalbed gas drainage

Results of direct-method determination of the gas content of U.S. coalbeds

Effects of stimulation treatments on coalbeds and surrounding strata :evidence from underground observations

Determining the source of longwall gob gas :Lower Kittanning Coalbed, Cambria County, PA


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