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Prospect trenching with caterpillar-mounted angledozers
A method for surveying drill holes by oriented drill rods
A study of fault determinations by geophysical methods in the fluorspar areas of Western Kentucky
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Published Year
1940-1949 (3) *
Subject
Prospecting (3) *
Boring (1)
Drill pipe (1)
Fluorspar mines and mining--Kentucky--Crittenden County (1)
Geophysics (1)
Mines and mineral resources (1)
Author
Cohen, C. J. (1)
Dahners, L. A. (1)
Hemberger, S. J. (1)
Lee, Frederick William, (1)
Lorain, S.H. (1)
