urine samples from persons 5 vears of age and older. At Njelang, ion- participants of the whole-body counting program were. invited to provide urine samples. Approximately 400 urine samples were collected and are curently being spectrometrically analyzed for gamma emitters and radiochemically analvzed for Sr-90. Additionally, participants provided physical and demo- graonic data. As previously mentioned, whole-body counting was conducted with two independent chair counting systems in which a sodium iodide detector was posi- tioned in front of a sitting person. This geometry allowed safe entry and egress with comparable sensitivity relative to the bed geometry used in prior field trips. Approximately 400 spectra were obtained in this way and analyzed for Cs~137 and X-40 using calibration standards which best matched the sex, height and weight of the individual. Additional analvses were performed to determine frequency distribution statistics for various age and sex groupings of the data» Quality assurance was obtained by duplicate whole-body counts and repetitive point-source standard counts. During January and February 1980, Lessard undertook retrospective as- sessment of chronic external and internal dose equivalents to the residents of Rongelap and Utirik. The dose interval assessed was after they returned home following the BRAVO test and evacuation and prior to January 1, 1980. Les- sard, Miltenberger and Greenhouse also completed the Sr-90 and Cs-137 dose equivalent-commitment estimates for former residents of Bixini Atoll. Ad- ditionally they determined dietary radioactivity intake for Cs-137 in the Bikini population and compiled whole-body counting results for the years 1974 to 1979. These Bikini related works were prepared as 3 primary scientific publications. L5