tad “ut ie = - 55 - alyses - | Radiochemical An “oeagtoctnaten ao analyses of some of the samples collected at Rongelap - Atoll have been completed and the data are partially reported to show the trends of distribution. Detailed chemical studies on the samples collected should be forthcoming from the samples sent to the New York Operations | Office” and from other samples being studied in detail at the Applied Fisheries Laboratory. The procedures used for the strontium and cerium determinations were aed the same as those described in UWF L-42, Analysis for cesium followed _the method outlined in the Los Alamos report LA- 1566 11 Data for the analyses are given in Appendix Hand are summarized in ‘text Tables 14 and 15. Radiostrontium (Tables 14 and 15). The Sr 90** values for food plants, except coconuts, collected in October 1955 approximate the theoretical pro- _ portion of mixed fission products activity !? at 1.7 years, 4 percent. Coco- “ nuts contained 0.1 percent gr2° with appropriate correction for time of , collection, This is roughly in agreement with values reported in UWFL-42 and USNRDL-454, assuming that Table 3.1, page 14, in the latter report _. 80 a includes radioactivity from Y" 90 with Sr ~~ No Sr 90 was found in the soft tissues of pelagic or reef fish or clams. oa Analysis of a single sample of bonito bone yielded a maximum Sr?° level of _* Letters of October 26 and November 9, 1955 from Allyn H. Seymour, Applied Fisheries Laboratory, to Merrill Eisenbud, New York Operations. 7 ws S59 values given in text and tables do not include radioactivity due to the daughter. UNIVERs UNIV. Gi