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A method for surveying drill holes by oriented drill rods
North Carolina mica spots :Mitchell, Macon, Gaston, and Yancey Counties
Investigation of the Virgilina copper district, Virginia and North Carolina
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Published Year
1940-1949 (3)
Subject
Boring (1)
Copper ores--North Carolina (1)
Copper ores--Virginia (1)
Drill pipe (1)
Mica--North Carolina (1)
Ore deposits--North Carolina (1)
Prospecting (1)
Author
Dahners, L. A. (3) *
Cohen, C. J. (2)
McIntosh, F. K. (1)
Newberry, A. W. (1)
Robertson, Almon F. (1)
Roos, Alford (1)
