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USBM IC 7926

Placer mining in Alaska: methods and costs at operations using hydraulic and mechanical excavation equipment with nonfloating washing plants

Bibliographic Reference

Thomas, B.I., Cook, D.J., Wolff, E., and Kerns, W.H., 1959, Placer mining in Alaska: methods and costs at operations using hydraulic and mechanical excavation equipment with nonfloating washing plants: U.S. Bureau of Mines Information Circular 7926, 34 p.

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