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Mining and milling practices at small gold mines

Power-shovel and dragline placer mining

Published Year

• 1930-1939 (2) *

Subject

• Gold mines and mining (2) *
• Placer deposits (1)

Author

• Gardner, E. D. (2) *
• Allsman, Paul Trekell, (1)
• Johnson, Charles H., (1)

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