Effects of abandoned multiple seam workings on a longwall in Virginia

Author:	Chekan, G. J.
Additional Authors:	Dwyer, David L., Matetic, Rudy J.
Year:	1989
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I.28.23:9247
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	9247
Subjects:	Longwall mining--Virginia--Dickenson County
	Mine subsidences--Virginia--Dickenson County
Link:	https://hdl.handle.net/2027/mdp.39015078476978