Mining practices, methods, and costs at Mine No. 4 of the Marquette Range, Michigan

Author:	Graff, W. W.
Year:	1930
Document Type:	USBI
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6390
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	6390
Subjects:	Mines and mineral resources--Michigan
	Hematite
Link:	https://hdl.handle.net/2027/mdp.39015095085307