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Drilling and sampling with a wagon drill

Diamond drilling blast holes, Balmat Mine, St. Lawrence County, N.Y.

Diamond-drilling blast holes, Bellefonte Mine, National Gypsum Co., Centre County, Pa.

Diamond-drilling blast holes, Eastern Magnetite Mine C

Blast-hole diamond drilling in California mines

Published Year

• 1940-1949 (5) *

Subject

• Boring machinery (5) *
• Blasting (3)
• Diamond bits (3)
• Rock-drills (3)
• Boring (1)
• Magnetite mines and mining--Equipment and supplies (1)
• Mines and mineral resources--California (1)
• Mines and mineral resources--Pennsylvania--Centre--Equipment and supplies (1)
• Zinc mines and mining--New York (State)--Saint Lawrence County--Equipment and supplies (1)

Author

• Mosier, McHenry. (3)
• Butner, D. W. (1)
• Soul©Øe, J. H. (1)

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