Loading characteristics of pillars in multiple-seam mining operations

Author:	Chekan, G. J.
Additional Authors:	Matetic, Rudy J.
Year:	1988
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9173
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	9173
Subjects:	Coal mines and mining
	Pillaring (Mining)
	Mine subsidences
Link:	https://hdl.handle.net/2027/mdp.39015078479659