Short-delay blasting in underground coal mines

Author:	Mainiero, Richard J.
Additional Authors:	Verakis, Harry C.,
Year:	1986
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9064
Series:	Information circular / Bureau of Mines ;
Report Number:	9064
Subjects:	Bituminous coal
	Coal mines and mining--Safety measures
	Blasting--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078459149