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Shaft sinking with a shot drill, Idaho Maryland Mine, Grass Valley, Calif.

Prediction of penetration rate for percussive drilling

Percussive drilling with independent rotation

Drillability studies :percussive drilling in the field

Published Year

• 1930-1939 (1)
• 1970-1979 (3)

Subject

• Percussion drilling (4) *
• Boring (2)
• Boring machinery (2)
• Drill pipe (1)
• Drilling and boring machinery (1)
• Tunneling (1)

Author

• Bruce, William E. (1)
• Fumanti, Robert R. (1)
• Jackson, C. F. (1)
• Newsom, J. B. (1)
• Schmidt, Robert L. (1)
• Selim, A. Aly. (1)
• Unger, Harold F. (1)

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