Thick-seam mining in the western United States--geological considerations

Author:	Boreck, D. L.
Year:	1986
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I28.27:9116
Series:	Information circular / Bureau of Mines ;
Report Number:	9116.
Subjects:	Coal--Geology--West (U.S.)
	Thick seam mining--West (U.S.)
Link:	https://hdl.handle.net/2027/mdp.39015078464818