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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
- Click for online content.
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
- Click for online content.
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.
