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

Published Year

• 1950-1959 (1)

Subject

• Mines and mineral resources--Alaska (1)
• Placer deposits--Alaska (1) *

Author

• Cook, Donald J. (1)
• Kerns, William H. (1) *
• Thomas, Bruce I. (1)
• Wolff, Ernest (1)

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