ae ++ et caryFy Pr Figure 9. Trust Territory ship used for 1960 survey, anchored in the lagoon off Rongelap village. - Tabie ? Percent Distribution of Population by Age Groups Age, yr Rongelap control (206 people, 1959) Rongelap exposed (102 people, 1959) <5 15-24 25-44 45-64 >65 45.6% 11.2 23.8 13.0 4.4 49.0% 12.7 20.6 10.8 6.9 33.8% 18.9 25.9 15.5 3.9 25.1% 18.2 30.1 19.8 6.8 19.0 16.2 23.6 29.0 Median age, yr Marshall Islands (1948-50) USS, (1940) on the exposed population only. The histories were Results and Discussion plete physical examinations were done, but special examinations, such asslit-lamp studiesof the lens The results of the 5- and 6-year post-exposure surveys will generally be reported together. taken by one of the Marshallese doctors. Com- and anthropometric measurements on the children (except for height and weight), were mot made. One hematological examination wascar- , ried out on the exposed population which in- * cluded WBC by electronic counting technique (Coulter), differential smears, smears for alkaline posphatase staining, and basophil counts. About i. .oty 24-hr urine samples were collected from exposed and unexposed people for radiochemical analysis to determine bodyburdens of Sr®”’. INTERVAL MEDICAL HISTORY The census of Rongelap as of 1959 was 308 people, of whom 82 had been exposed, 20 were children born of the exposed, and 206 were unexposed. A census was not taken in 1960, but the number of people appeared to be about the same. Table 2 shows the percentagedistribution in the population for the Rongelap exposed and unex- yA