“…Between 1975 and1983, this U.S. Department of Energy program acquired stream sediment geochemistry and airborne spectral gamma-ray radiation data for the conterminous 48 States and Alaska. · The HSSR, one component of the NURE program, entailed collection and analysis of samples of sediment (stream, soil, talus, playa, and others), ground water, surface water, and vegetation to determine concentrations of uranium and other selected elements (Arendt and others, 1980).…”