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Shaft sinking by rotary drilling

Sinking large-diameter drill holes, Lake Superior district underground iron mines

Methods and costs of sinking a 2-1/2-compartment shaft at the Hope Mine, Clark Fork, Idaho

Methods and costs of sinking the Silver Summit shaft, Wallace, Idaho, using a mechanical mucking machine

Published Year

• 1940-1949 (4) *

Subject

• Shaft sinking (4) *
• Iron mines and mining--Lake States (1)
• Mines and mineral resources--Idaho--Bonner County (1)
• Mines and mineral resources--Idaho--Shoshone County (1)
• Rotary drilling (1)

Author

• Hundhausen, Robert J. (2)
• Cash, Frank E. (1)
• Grismer, George M. (1)
• Johnson, Ernest W. (1)
• Platt, D. H. (1)

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