Placer mining in the western United States :part 1. general information, hand-shoveling, and ground-sluicing

Author:	Gardner, E. D.
Additional Authors:	Johnson, C. H.
Year:	1934
Document Type:	USBI
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.27:6786
Series:	Information circular / Bureau of Mines ;
Report Number:	6786
Subjects:	Gold mines and mining--United States
	Hydraulic mining
Link:	https://hdl.handle.net/2027/mdp.39015074128235