220 Table 7— (Continued) Sample Date obtained Location 22Na, dis/min per liter Alaska Caribou meat_ Caribou meat Moose meat Moose meat Caribou meat Caribou meat Reindeer meat Urinet Man (Eskimo)7 Near Near Near Near Kotzebue Kotzebue Kotzebue Kotzebue July 1963 July 1963 March 1964 March 1964 180 89.1 58.7 80.6 Near Kotzebue Oct. 9, 1961 23.0 Anaktuvuk Pass Anaktuvuk Pass January 1964 January 1964 Near Kotzebue Near Kotzebue Aug. 5, 1961 August 1963 9.13 15.6 126 34277 *Richland, Wash., composite from several individuals. +These values are estimated whole-body burdens for **Na based on an 11-day biological half-life. tComposite from two Alaskan Eskimos. REFERENCES 1, R. W. Perkins, Anticoincidence Shielded— Multidimensional Gamma Ray Spectrometry for Direct High Sensitivity Analysis of Radionuclide Mixtures, Paper No. SM 55/53, in Symposium on Radiochemical Methods of Analysis, Salzburg, Austria, October 18 to 23, 1964, to be published. 2. R. W. Perkins, Physical and Chemical Form of ™!1in Fallout, Health Phys., 9; 1113-1122 (1963), 3. E, P. Harvey, Jr., and W. R. Collins, Jr., Health and Safety Laboratory, Fallout Program Quarterly Summary Report for June 1, 1963, to September 1, 1963, USAEC Report HASL-140, Oct. 1, 1963; and Fallout Program Quarterly Summary Report for December 1, 1963, to March 1, 1964, USAEC Report HASL-144, Apr. 1, 1964. 4, L. Marquez, N. L. Costa, and I.G. Almeida, The Formation of 2?Na from At- mospheric Argon by Cosmic Rays, Nuovo Cimento, 6(6): 1292-1295 (1957). (Cited in Nucl. Set. Abstr., 12: 6022 (1958).] 5. N. Bhandari and Rama, Atmospheric Circulation from Observations of Sodium-22 and Other Short-lived Natural Radioactivities, J. Geophys. Res., 68: 1959-1966 (1963). 6, H, E. Palmer and R. W. Perkins, Cesium-134 in Alaskan Eskimos and in Fallout, Science, 142: 66-67 (1963). 7. R. W, Perkins and J. M. Nielsen, Sodium-22 and Cesium-134 in Foods, People, and Air, to be published. 8. L. Marquez, N. L. de Costa, I. G. de Almeida, Centro Brasileiro de Pesquisas Fisicas, Cobalt-60 from Thermonuclear Tests in the Atmosphere, Report NP-7022, Notas de Fisica, Vol. IV, No. 6, May 22, 1958; and Radioisotopes from Fusion in Rain Water, Report NP-7023, Notas de Fisica, Vol. IV, No. 7, June 4, 1958. 9, J. R. Arnold and H, A, Al-Salih, Beryllium-7 Produced by Cosmic Rays, Science, 121: 451-453 (1955). 10, Rama and M., Honda, Natural Radioactivity in the Atmosphere, J. Geophys, Res., 66: 3227-3231 (1961). 11, A, K. Stebbins III, Second Special Report on High Altitude Sampling Pro- gram, Report DASA-539B, Defense Atomic Support Agency, Aug. 1, 1961; and J, P. Friend (Ed.), The High Altitude Sampling Program, Report DASA1300, Isotopes, Inc., Aug. 31, 1961. 12, U.S. Public Health Service, Radiological Health Data, Vol. III, 1963, and Vol. IV, 1964.