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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
Phosphate rock mining in southeastern Idaho
Investigation of tungsten occurrences in Darwin District, Inyo County, Calif.
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Published Year
1940-1949 (4) *
Subject
Boring (1)
Boring machinery (1)
Diamond bits (1)
Mines and mineral resources--California (1)
Phosphate mines and mining--Idaho (1)
Phosphate rock--Idaho (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. (4) *
