Manganese investigations.

Author:	Fine, M. M.
Additional Authors:	Shelton, S. M., Zadra, J. B.
Year:	1942
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3624
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3624
Subjects:	Ore-dressing
	Manganese ores--Minnesota--Ironton
Link:	https://hdl.handle.net/2027/mdp.39015078518290