Placer mining in the western United States, pt. 1; general information, hand-shoveling, and ground-sluicing
Gardner, E.D., and Johnson, C.H., 1934, Placer mining in the western United States, pt. 1; general information, hand-shoveling, and ground-sluicing: U.S. Bureau of Mines Information Circular I.C. 6786, 75 p.
Authors
Gardner, E.D., and Johnson, C.H.
Publication Date
1934
Citation
U.S. Bureau of Mines Information Circular I.C. 6786, 75 p.