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Apparent earth conductivity over coal mines as estimated from through-the-earth electromagnetic transmission tests

Published Year

• 1980-1989 (1)

Subject

• Coal mines and mining--United States (1)
• Earth resistance (Geophysics)--Measurement (1)
• Earth resistance--Measurement (1) *
• Electromagnetic waves--Transmission--Measurement (1)

Author

• Durkin, John. (1) *

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