During October Lessard completed the reconstruction of chronic dose equivalents for Roazgelap and Utirix residents for the tine interval 1954 to 13950. Retrospective and sontemporary external exoosure rate data, whole-body counting data, viewed. and radiochemical analysis of urine and blood data were re- Dosimetric models which best described structed for the nuclides of interest. the uptake regime were con- Daily activity ingestion rates, whole-body dose~equivalent rates and dose-equivalent committents to various orzans were determined. Popularion dosimetry results and methods were written up and reported in a BNL publication. maintained at Individual dosimetric records are the Laboratory. At the request of McCraw (DOEDHER), Lessard and Miltenberger analyzed former Bikini and Rongelap personnel monitoring data in order to estimate Cs-137 body burdens Atoll. for the population who may return to Enue Island, Bikini This projection involved a determination of activity transfer factors calculated from Rongelap and Bikini whole-body counting data and from activity concentration analyses of coconut tree products. These factors were comparable for both atolls and dose-equivalent commitments were projected for adults. Ia December, Naidu contacted Dr. Shinji Okano of Japan regarding an- alyses of the “Bikini Ash of Daigo-Fukuryumara”. Lessard, Miltenberger and Moorthy outlined a radiochemical separation/neutron fission radioassay technique to be used on urine collected from Marshallese exposed to tropospheric wWeapons-test plutonium. Sondhaus (UCCM) visited Lessard to discuss his work related to acute phase dose reassessment for Rongelap and Jtirik residents. Thiessen, the new Director of the Human Health and Assessments Division of the Department of Energy was appraised of the RUDR program's activities. 20 Also in