Mining and milling tungsten ores

Author:	Vanderburg, William O.
Year:	1935
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6852
Series:	Information circular / Bureau of Mines ;
Report Number:	6852
Subjects:	Mining engineering--United States
	Tungsten mines and mining--United States
Link:	https://hdl.handle.net/2027/mdp.39015086486175