Safety organizations in Arizona copper mines

Author:	Gardner, E. D.
Additional Authors:	Parker, Dorsey J.,
Year:	1929
Document Type:	USBM
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines :
SUDOC:	C 22.5:452
Series:	Technical paper / United States Department of Commerce, Bureau of Mines ;
Report Number:	452
Subjects:	Copper mines and mining--Arizona
	Cooper mine accidents--Prevention
Link:	https://hdl.handle.net/2027/mdp.39015078543330