Progress reports :metallurgical division.

Author:	Hayes, Earl T.
Year:	1941
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3570
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3570
Subjects:	Ore-dressing
	Hematite
Link:	https://hdl.handle.net/2027/mdp.39015078475624