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Stemming in metal mines.

Comparison of manganese steel with carbon steel for detachable-bit drill rods

Stemming in metal mines.

Stemming in metal mines :progress report 6 : relative advantages and disadvantages of different types of stemming and no stemming when used with 40 percent ammonia gelatin dynamite at the Mount Weather testing adit

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

Diamond drilling and diamond bit investigation.

Yancey-Crawford manganese deposit, Rockingham County, Va.

Watson manganese deposit, Page County, Va.

Shaped charges applied to mining:

Published Year

• 1940-1949 (9) *

Subject

• Blasting (3)
• Mine safety (3)
• Bits (Drilling and boring) (1)
• Boring (1)
• Diamond bits--Testing (1)
• Drilling muds (1)
• Granite (1)
• Manganese ores--Virginia--Page County (1)
• Manganese ores--Virginia--Rockingham County (1)
• Mine blasting (1)
• Steel (1)

Author

• Agnew, Wing G. (9) *
• Johnson, John A. (3)
• Kline, M. H. (2)
• Mosier, McHenry. (2)
• Chayes, Felix. (1)
• Draper, Hiram C. (1)
• Gabriel, Alton. (1)
• Hill, James E. (1)
• Long, Albert E. (1)
• Long, Albert. (1)
• Obert, Leonard, (1)

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