Diamond-drilling blast holes, eastern Magnetite Mine A

Author:	Mosier, McHenry.
Year:	1946
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7393
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7393
Subjects:	Mines and mineral resources
	Boring
	Rock-drills
	Magnetite
Link:	https://hdl.handle.net/2027/mdp.39015086585323