10 Table 1 Location of Rongelap People Exposed ~ Adult Majuro Children 3 Kwajalein Rongelap Eniaetok Other atolls 4 33 8 26 0 23 1 32 30 37 3 2 Total of exposed parents ] 6 0 Table 2 Rongelap (220 people, Age.yr 1961) <I15 45.4% 15-24 12.3 35-44 23.6 age,yr 19.5 45-64 765 Median 14.1 4.5 childrenof exposed adults) 30.0% 13.8 17.2 10.3 8.6 14.5 8 Children 7 23 75 l 216 15 120 348 9 25 24 0 12 13 59 5 109 Total 67 27 Radionuclide Body Burden Evaluation Since results of the last survey indicated that exposed (116 Rongelap People,jl Adult . Percent Distribution of Population by Age Groups unexposed Unexposed Children Cs'" levels in the Rongelap people had about reached equilibrium and that Zn"levels were drop- Marshall Islands U.S. (1961) (1960) 43.1% 28.7% 14.4 13.8 20.0 27.1 18.0 29.5 14.6 7.4 20.8 9.6 cal analyscs was also examined for sugar in the case of 199 Rongelapese.'?* ping, i¢ was considered that gamma spectroscopy with the 21-ton whole-body counter would not be necessary again for several years. Therefore, no gamma spectrographic analyses were done during this survey. However,thirty-five 24-hr urine samples and one pool sample (12 liters) were col- lected for radiochemical analysis for Sr°°, In addition, samples of rib and vertebrac taken at autopsy from the 78-yr-old woman who had dicd were brought back for Sr®* analysis; also 4 coconut crabs collected at Rongelap.* * Results and Discussion Urine Analyses Urine total iodides and creatinine levels were obtained on 10 casual urine samples of Rongelapese who had previously shown slight elevation of their protein bound iodine (PBI) levels. Total todine and creatinine were determined. Routine urine analyses were carried out on the majority of people. This included determinations of protcin and hyperglucosuria by reagent paper strips. ** *The Clinical Laboratory of the South Nassau Communities Hospital carried out these analyses. **Combistx, Ames Company, Inc., Elkhart, Indiana. The census of Rongelap people in March 1962 was 348, of whick 82 were in the exposed group (including 4 children exposed ia utero at the time of the accident), 37 were children of exposed parents, and 229 were unexposed people, Table | shows their locations. In Table 2 the population is broken down according to percent distribution in various age groups and compared with that of the Marshall Islands as a whole for 1961 and of the U.S. for 1960. The table also shows the median age. The lower median age of the Marshallese **We are grateful to Dr. F. P. Hardy, Jr. and Dr. J. Warley of the Health and Safety Laboratory of the New York Operations Office of the AEC for performing these analyses.