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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

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)

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