Grouting horizontal drainage holes in coalbeds
By: by George N. Aul and Joseph Cervik.
Contributors: Cervik, Joseph.; United States. Bureau of Mines.
Series: Report of investigations - Bureau of Mines ; 8375; Report of investigations (United States. Bureau of Mines) -- 8375.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1979
Place of publication: [Washington]
Language: eng
Number of pages: 16
Subjects: Coal mines and mining -- Safety measures.; Mine gases.; Methane.
Notes: Bibliography: p. 16.