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Power-shovel and dragline placer mining

The treatment and sale of black sands

Published Year

• 1930-1939 (2) *

Subject

• Placer deposits (2) *
• Black sand (1)
• Gold mines and mining (1)
• Gold mines and mining--Handbooks, manuals, etc (1)
• Hydraulic mining--Handbooks, manuals, etc (1)

Author

• Allsman, Paul Trekell, (1)
• Bernewitz, M. W. (1)
• Gardner, E. D. (1)

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