Holdings: High angle mining system

Main Author:	Christofferson, Donald.
Other Authors:	ESD Corporation., United States. Bureau of Mines. Branch of Procurement.
Format:	Microfilm
Language:	English
Published:	Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, [1983] Washington, D.C. : [1983]
Physical Description:	150 pages : illustrations, maps ; 28 cm.
Series:	Mining research contract report. Open file report (United States. Bureau of Mines) ; 91-40.
Subjects:	Coal-mining machinery -- Technological innovations. Strip mining -- Technological innovations -- United States. Coal augers -- Technological innovations. Buckets (Excavating machinery) -- Technological innovations.

Location	Call Number:	Status
CMU Storage Gov Pub Microfiche	I 28.155:OFR 40-91	Available