[en] During the month of August 1979, EG and G geoMetrics collected 3038 line miles of high sensitivity airborne radiometric and magnetic data in South Dakota within the Rapid City 1⁰ x 2⁰ NTMS quadrangle as part of the Department of Energy's National Uranium Resource Evaluation Program. All radiometric and magnetic data were fully corrected and interpreted by geoMetrics and are presented as three volumes (one Volume I and two Volume II's). Approximately 80 percent of the surveyed area is covered by outcrops of Upper Cretaceous sediments. The remaining 20 percent, within the Black Hills Uplift, contains outcrops of Mesozoic and Paleozoic sediments, Precambrian metamorphics, and minor Tertiary intrusives. The only known uranium deposits are in Lawrence County at the southwest corner of the quadrangle, where less than 100,000 tons of 0.01% U₃O₈ have been mined