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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
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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.