Mining and benefication of Appalachian manganese ores

Author:	Newton, Edmund.
Year:	1941
Document Type:	USBI
Issuing Agency:	U.S. Dept of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7145
Series:	Information circular / Bureau of Mines ;
Report Number:	7145.
Subjects:	Ore-dressing
	Ore dressing
	Manganese--Appalachian Region
Link:	https://hdl.handle.net/2027/mdp.39015078534487