Hawkins and Gearhart reported in 1968 that the nation's ever increasing need for vast amounts of power capacity has vaulted uranium logging into a vigorous industry. As prospecting has become intensified, companies are using more complex and technical ways of finding uranium ore. The areas known to be favorable for the deposit of uranium ore are often surveyed first by using airborne electronic sensing devices. Highly sensitive magnetometers and gamma ray detectors are being used in measuring surface deposits, but since most outcrops of uranium have been found, and a few feet of soil will effectively mask the ore from even the most sensitive gamma detectors, any indication of radioactive areas calls for exploratory drilling.
The authors concluded that wide range gross count gamma probes are now available for recording the count rate of wide grades of uranium ore with other logs being used for specialized study. Properly calibrated systems are being used for gross count quantitative evaluation of the ore bodies. Experimental data available in field spectral logging has helped define the limitations of existing equipment. The use of coaxial type transmission logging cables and field use of new solid state detectors are expected to advance spectral well logging in the future. New and different probe designs are being developed that will help to establish areas that will be more favorable for deposits of uranium ore.
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