Finfinger, Gerald L.

Review of horizontal drilling technology for methane drainage from U. S. coalbeds / by Gerald L. Finfinger and Joseph Cervik - [Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, 1980. - 20 p. : 13 ill. ; 27 cm. - United States Bureau of Mines.Information circular 8829 .

Bibliography: p. 18-19.


Mine gases.
Methane.
Boring.
Coal mines and mining--Safety measures--United States.

USBM ic-8829