Diamond-drilling blast holes, eastern magnetite "Mine B"

Author:	Mosier, McHenry.
Year:	1947
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7401
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7401
Subjects:	Magnetite
	Mines and mineral resources--Equipment and supplies
Link:	https://hdl.handle.net/2027/mdp.39015078535849