Grouting horizontal drainage holes in coalbeds

Author:	Aul, George N.
Additional Authors:	Cervik, Joseph,
Year:	1979
Document Type:	BMRA
Issuing Agency:	Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8375
Series:	Report of investigations / Bureau of Mines ;
Report Number:	8375
Subjects:	Coal mines and mining--Safety measures
	Methane
	Mine gases
Link:	https://hdl.handle.net/2027/mdp.39015078482117