Design of underground mine openings oil-shale mine, Rifle, Colo.

Author:	Merrill, Robert H.
Year:	1954
Document Type:	BMRA
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.23:5089
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	5089
Subjects:	Oil-shale industry
	Oil-shales--Colorado
	Mining engineering
Link:	https://hdl.handle.net/2027/mdp.39015078536326