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A method for surveying drill holes by oriented drill rods

Investigation of the Virgilina copper district, Virginia and North Carolina

Further investigations of the Redford-Clayburg magnetite district, Clinton County, N.Y. :supplement to Report of investigations 4003

Published Year

• 1940-1949 (3) *

Subject

• Boring (1)
• Copper ores--North Carolina (1)
• Copper ores--Virginia (1)
• Drill pipe (1)
• Iron ores--New York (State)--Clinton County (1)
• Magnetite--New York (State)--Clinton County (1)
• Prospecting (1)

Author

• Cohen, C. J. (3) *
• Dahners, L. A. (2)
• Bardill, John D. (1)
• Newberry, A. W. (1)
• Read, D. F. (1)
• Robertson, Almon F. (1)
• Roos, Alford (1)

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