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Comparisons between cross-measure boreholes and surface gob holes

Goodman, Tobias W.
[Pittsburg, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1986] 1986

Degasification of virgin Pittsburgh coalbed through a large borehole

[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973] 1973

Degasification study from an air shaft in the Beckley coalbed

Goodman, Tobias W.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1982] 1982

Drilling a horizontal coalbed methane drainage system from a directional surface borehole

Oyler, David C.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1982] 1982

A fail-safe control system for a mine methane pipeline

[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1980] 1980

Measuring formation pressures and the degree of gas drainage in a large coalbed gas drainage field

Oyler, David C.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1985] 1985

Methane drainage study using an underground pipeline, Marianna mine 58

Prosser, L. J. (Leonard J.)
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1981] 1981

Rotary drilling holes in coalbeds for degasification

Cervik, Joseph.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1975] 1975

Three coal mine gob degasification studies using surface foreholes and a bleeder system

Maksimovic, S. D.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1980] 1980

Underground gob gas drainage during longwall mining

Schatzel, Steven J.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1982] 1982

Use of a sodium silicate gel grout for plugging horizontal methane-drainage holes

Oyler, David C.
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1984] 1984

Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

Diamond, W. P. (William P.)
[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1976] 1976