AERIAL RADIOMETRIC AND MAGNETIC RECONNAISSANCE SURVEY OF BALTIMORE, WASHINGTON, AND RICHMOND QUADRANGLES FINAL REPORT VOLUME 1 INSTRUMENTATION AND METHODS

摘要

The objective of the work was to define areas showing surface indications of a generally higher uranium content where detailed exploration of uranium would moat likely be successful. A DC-3 aircraft equipped with a gamma-ray spectrom¬eter using nine large-volume NaI detectors, two 600-channel analyzers, and ancillary geophysical and electronic equipment was used. The system was calibrated using DOB calibration facilities at Crand Junction, Colorado, and Lake Head, Arizona.