Probe-hole drilling :high-stress detection in coal

Author:	McDonnell, John P.
Additional Authors:	Haramy, Khamis Y.
Year:	1988
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9179
Series:	Information circular / Bureau of Mines ;
Report Number:	9179
Subjects:	Coal mines and mining--Safety measures
	Boring
	Rock bursts
Link:	https://hdl.handle.net/2027/mdp.39015078465393