under the BNL Safety and Environmental Protection Division along with the follow-up whole body counting of former Bikini Island residents currently residing on Ejit or Majuro Islands, Majuro Atoll, Kili Island (MI 79). and on Field Measurement of gamma-emitting radionuclide body burdens was accomplished with a tra1ler-mounted shadow-shield whole body counter. from the measured body burdens Island during the years Dose commitments were calculated for many persons residing at Bikini 1969 through 1978. In addition to retrospective dose equivalents, whole body counting and bioassy techniques provided the data base from which dose equivalent commitments were calculated. gether with external radiation measurements, sessment of dose These calculations, to- provided a complete as- to the Bikini population from chronic exposure to im- portant fallout radionuclides in their home atoll environment. Results In the following tables, the dose equivalent during the resi- dency interval and dose equivalent commitments and the total body are presented. to bone, bone marrow The mean for and dose equivalent commitment was determined the dose equivalent from individual data points which represent a wide distribution of residence intervals. The mean value corresponds to the mean residence interval (years) for the population described. Residence intervals were determined through verbal interrogation of participants monitoring program. in the personnel