Single-entry development for longwall mining :research approach and results at Sunnyside No. 2 mine, Carbon County, Utah

Author:	Poad, Melvin E.
Additional Authors:	Waddell, Galen G., Phillips, Earl L.,
Year:	1977
Document Type:	BMRA
Issuing Agency:	Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8252
Series:	Report of investigations / Bureau of Mines ;
Report Number:	8252
Subjects:	Coal mines and mining
	Tunneling
Link:	https://hdl.handle.net/2027/mdp.39015078483032