The body burdens of internal emitters in the Marshallese were estimated from the data obtained by radiochemical analvsis of the tissues of the abovementioned pigs which were simultaneously exposed, and from a comparison of urinalysis data from animals and from human beings (Cohn ct al, 1955). The animal data are indicative of the qualitative nature of the inhalation exposure to the people, even though thev quantitatively reflect the greater ingestion by the animals of contaminated food during their prolonged stay on the island. - The total amount of radioactive material in the G.L. tract of the Rongelap people at ] dayafter exposure was estimated to be 3 me. The mean body burden of the Marshallese at } day following the 1954 fallout was estimated to be Sr5®, 1.6 pe; Bas, 2.7 pe; 1381, 6.4 pe and the rare 318 aati dttiiiite Rongelap People anetiiiametin Ficvre 3. Autoradiagraph of tibia of Rongelap rooster, March 1956 (from Cohn, 1955). «nm magia deme ~ pian = Cohn, Robertson, Conard