Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
12 results returnedSearch results
- 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
- 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
