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Hot milling of rock-drill bits at the mines of the Vinegar Hill Zinc Co., Platteville, Wis.

Bit gage v. drilling speed

Mount Weather testing adit :progress report 1

Effect of lubricating agents in a diamond-drilling-bit coolant and cuttings-removal medium

Published Year

• 1930-1939 (3)
• 1940-1949 (1)

Subject

• Bits (Drilling and boring) (4) *
• Drilling and boring (3)
• Drilling muds (1)
• Rock-drills (1)
• Zinc mines and mining--Wisconsin (1)

Author

• Agnew, Wing G. (4) *
• Mosier, McHenry. (2) *
• Long, Albert E. (1)

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