Surface mine blasting :proceedings

Year:	1987
Document Type:	USBI
Issuing Agency:	The Bureau,
SUDOC:	I 28.27: 9135
Series:	Information circular ;
Report Number:	9135
Subjects:	Mining engineering--Congresses
	Blasting--Congresses
Link:	https://hdl.handle.net/2027/mdp.39015078460394