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Small-scale placer-mining methods

Small-scale placer-mining methods

Power-shovel and dragline placer mining

Published Year

• 1930-1939 (3)

Subject

• Gold mines and mining (3) *
• Placer deposits (3) *

Author

• Jackson, Charles Freeman, (2)
• Knaebel, John Ballantine, (2)
• Allsman, Paul Trekell, (1)
• Gardner, E. D. (1)

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