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E-book

Methane emission rate studies in a central Pennsylvania mine

Publisher:
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1971]
Phys. Desc.:
9 pages : digital, PDF file
Electronic resource
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E-book

Methane emission rate study in a deep Pocahontas No. 3 coalbed mine in conjunction with drilling degasification holes in the coalbed

Publisher:
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1972]
Phys. Desc.:
12 pages : digital, PDF file
Electronic resource
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E-book

Bleeder system in virgin area in a Pittsburgh coalbed mine

Publisher:
[Pittsburg, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]
Phys. Desc.:
8 pages : digital, PDF file
Electronic resource
Click for online content.

E-book

Methane control by isolation of a major coal panel : Pittsburgh coalbed

Publisher:
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]
Phys. Desc.:
11 pages : digital, PDF file
Electronic resource
Click for online content.