Application of large-hole burn cut in room-and-pillar mining

Additional Authors:	Schmidt, Robert L.
Year:	1975
Document Type:	BMRA
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.23:7994
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	7994
Subjects:	Blasting
	Mining engineering
Link:	https://hdl.handle.net/2027/mdp.39015078484204