“…Periodic environmental measurements in the immediate vicinity of AEC-operated nuclear facilities have allowed estimation of the uranium contribution to the relatively high ambient alpha activity in the local air (hew, 1970). Recent studies on the release of radioactivity from nuclear and fossil-fuel power plants (Eisenbud and Petrow, 1964;Martin et al, 1969) and a nuclear fuel reprocessing plant (Cochran et al, 1970) have also allowed determination of the magnitude of these sources of atmospheric uranium. In addition, study of uranium concentration in the atmosphere over the Atlantic Ocean from Belgium to Antarctica and at a site in the United Kingdom has been reported (Hamilton, 1970).…”