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E-book
Measuring the methane content of bituminous coalbeds
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975]
- Phys. Desc.:
- 22 pages : digital, PDF file
- Electronic resource
- Click for online content.
E-book
Selected geologic factors affecting mining of the Pittsburgh coalbed
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975]
- Phys. Desc.:
- 1 online resource (iii, 72 pages)
- Electronic resource
- Click for online content.
E-book
Use of surface joint and photolinear data for predicting subsurface coal cleat orientation
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1976]
- Phys. Desc.:
- 1 online resource (13 pages)
- Electronic resource
- Click for online content.
E-book
The direct method of determining methane content of coalbeds for ventilation design
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]
- Phys. Desc.:
- 17 pages : digital, PDF file
- Electronic resource
- Click for online content.
E-book
Geologic factors causing roof instability and methane emission problems : the Lower Kittaning coalbed, Cambria County, Pa
- Publisher:
- [Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]
- Phys. Desc.:
- ii, 25 pages : digital, PDF file
- Electronic resource
- Click for online content.
E-book
Geologic investigations of underground coal mining problems
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975]
- Phys. Desc.:
- ii, 30 pages : digital, PDF file
- Electronic resource
- Click for online content.
E-book
Cleat in bituminous coalbeds
- Publisher:
- [Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1974]
- Phys. Desc.:
- 25 pages : digital, PDF file
- Electronic resource
- Click for online content.
E-book
Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
- Publisher:
- [Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1977]
- Phys. Desc.:
- ii, 35 pages : digital, PDF file
- Electronic resource
- Click for online content.
