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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
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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)