rarv village was constructed for the Rongelap people (including the 18 from Ailingnae) on Majuro Atoll several hundred miles to the south, others may have an opportunity to make further calculationsif desired. Table | lists exposure data on the various popu- were examined at yearly intervals by a special - medical team. In July 1957, after careful evalu- summary, except where data are broken down into more detail, the exposed group includes the people exposed on Rongelap and on Ailingnae (subject wheretheylived for the following 32 vears and ation of radioactive contamination, Rongelap Istand was considered safe for habitation. A new village was constructed. and the Rongelap people were moved there by Navy ship. The annual medical survevs have since been carried out on Rongelap Island. . A group of more than 100 Rongela: »veople, who wererelatives of the exposed peop: ut had been awayfrom the island at the timeof the acci- dent, moved back with the Rongelap people to their home island and have served as an ideal comparison population for the studies. The num- ber has since increased to > 200. Following the initial survey of the Utirik people on Kwajalein in 195+, repeat surveys have been carried out on these people about every 3 years, including the 12- year survey. In addition. during the past survey, as in the previous surveys, a visit was made to Kwajalein and Majuro Atolls for examination of a num- ber of Rongelap people nowresiding at these atolls, and also groups of children who represent parts of the control group used for the growth and development studies of the exposed children. The accumulation of data from these surveysis becoming increasingly voluminous. Since condi- tions have not been favorable for performance of extensive statistical analyses or use of electronic computing procedures to store and manipulatethe data, the annual survey reports published by this Laboratory are made as completeas possible. This report, therefore, includes a considerable amount of raw data, much of it in appendices, so that lations involved in the fallout. In the following Nos. | to 86). Summaryof Past Findings Reports have been published on the medical findings of survevs made at the following times after exposure: initial examination,' 6 months, 1 year.’ 2 years,’ 3 years,’ + vears,” 5 and 6 vears,’ ? years,” 8 vears,” and 9 and 10 vears.*” Appendix | gives a more complete list of reports, including outside publications, on the results of medical surveys of the Marshallese exposed to fallout and in- cludes a section on the radiation ecological studies of these Islands published largely by the Univer- sity of Washington group. The following is a brief summary of the medical findings previously reported. . During the first 24 to 48 hr after exposure, about *4 of the people exposed on Rongelap Island experienced anorexia and nausea. A few vomited and had diarrhea, manyalso experienced itching and burning of the skin, and a few complained of lacrimation and burning ofthe eves. None of these svmpioms was noted in the Utirik people 1 i4-rad group}. Following this, the people remained asymptomatic until about 2 weeks after the accident, when cutaneous lesions and loss of hair de- veloped, due largely to beta irradiation of the skin. It was apparent when the people were first ex- amined, a few days after exposure, that the lvm- Table | Summary of Fallout Effects Group* Composition Fallout observed Estimated gamma dose (rads) Rongelap Ailingnae 64 Marshallese 18 Marshallese Heavy (snowltke) Moderate ( mistlike) 175 69 Rongerik Curik 28 Americans 157 Marshallese Moderate(mistlike) None 78 14 * Also exposed were 23 Japanese tishermen whoreceived a sublethal dose. Extentof skin lesions Extensive Less extensive Slight No skin lesions or epilation