Lead and zinc mining and milling in the United States :current practices and costs

Author:	Jackson, Charles Freeman,
Additional Authors:	Wright, Chilton Austin,, Knaebel, John Ballantine,
Year:	1934
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6776
Series:	Information circular / Bureau of Mines ;
Report Number:	6776
Subjects:	Ore-dressing
	Zinc mines and mining--United States
	Lead mines and mining--United States
Link:	https://hdl.handle.net/2027/mdp.39015078515262