‘levels on Bikini were observed to be highest in the more heavily vegetated interior and lowest along the shore where there has been more weathering. On near test islands, the major contributor to the external gamma field was observed to be cobalt-60. ‘Quantities of scrap metal containing cobalt-60 were found on these islands. Following the 1967 survey, the next significant step was taken by Dr. Philip F. Gustafson of the Division of Biology and Medicine,” who collected and summarized the data from all past surveys. Included in this material were reports from the Trust Territory District Agriculturist and from the Trust Territory District Anthropologist. Dr. Gustafson prepared estimates of potential exposures, both internal and external, for a returning population having living habits and diet that are expected to apply to the Bikinians. Also prepared were ten- tative recommendations with regard to the basic question of whether from a radiation exposure viewpoint the Bikinians should be allowed to return. AEC Review. In April 1968, the Division of Biology and Medicine appointed the following Ad Hoc Committee to consider the question of return of the Bikinians: John C. Bugher, Former Director EM, retired Robert A. Conard, Brookhaven National Laboratory Charles L. Dunham, Chairman, Division of Medical Sciences, NRC, NAS John H. Harley, Director HASL S. Allan Lough, Assistant Director for Radiological Physics, EM John B. Storer, Deputy Director EM Paul C. Tompkins, Executive Director FRC Shields Warren, Scientific Director, Cancer Research Institute, New England Deaconess Hospital *Nlow at Argonne National Laboratory, Argonne, Illinois, USA -7- . hh fs