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Blast-hole diamond drilling in California mines

Method and cost of driving the Rock Creek Tunnel, Hecla Mining Co., Shoshone County, Idaho

Investigation of tungsten occurrences in Darwin District, Inyo County, Calif.

Published Year

• 1940-1949 (3) *

Subject

• Boring (1)
• Boring machinery (1)
• Diamond bits (1)
• Mines and mineral resources--California (1)
• Silver mines and mining--Idaho--Shoshone County (1)
• Tungsten mines and mining--California--Inyo County (1)
• Tunneling--Idaho--Shoshone County--Costs (1)
• Tunneling--Idaho--Shoshone County--Technique (1)

Author

• Butner, D. W. (3) *

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