5. There appeared to be a definite pattern to the exposure rates encountered, with the higher rates observed on the northem half of the Atoll. 6. Only six islands were visited: IRENE, JANET, SALLY, TILDA, URSULA, and YVONNE. As a result of this survey, the AEC's 1972 Bikini radiological resurvey was extended to cover Fniwetok Atoll in a very limited reconnaissance effort in May 1972. as possible. An attempt was made to cover as many islands Of the 43-some islands in the Atoll, 18 of these were visited in May 1972. Adding these to 3 other islands visited by the July 1971 effort, recent data on 21 of the islands were made available. Although this was slightly less than half of the total number of islands, it was somewhat representative of the whole. The results of this survey also showed the Atoll-wide pattern of contamination suggested by the 1971 survey and the ranking of islands according to fallout insult. The gamma exposure rates known as of May 1972, a compilation of these two surveys, are shown as Figures 5, 6, 7, and eR data were obtained using a Baird-Atomic Scintillation netector “ees calibrated on Cesiun- 137 and do not represent the true Dose Rate, which would include contributions from low-energy gamma and cosmic radiation. In November 1972 an aerial radiation survey wad made of all islands within the Atoll. The results of this survey were directly beneficial to the soil sampling and terrestrial radiation survey efforts. The emerg- ing fallout pattem evident in May 1972 was confirmed as well as the accuracy of the ranking of each island by fallout insult. The aerial survey also eliminated the need to conduct close grid ground radiation surveys which had been planned before aerial data were available.