KOON -- 35,000 feet (10.67 km), slant range not reported UNION -- 35,000 feet (10.67 km), slant range 64,500 feet (19.66 km) YANKEE -~-- did not participate NECTAR -- 35,000 feet (10.67 km), Slant range 45,800 feet (13.96 km). The aircraft flew away from the cloud and was not exposed to signifFicant residual radiation exposure potential. Staffing: Three civilians were associated with this project, two CRL and one from WADC. Their exposures are given in Table 19. Prom Expo sures for the aircrew are included in Table 87. Project Report: Reference 71. Project 6.4 -- Proof Testing of Atomic Weapons Ship Countermeasures Agencies: Bureau of Ships (BuShips) Naval Radiological Defense Laboratory (NRDL) Army Chemical Center (ACC) Mare Island Naval Ship Yard (MINSY) Naval Unit, Chemical Corps School (NUCCS) Naval Schools Command, Treasure Island (NSC TI) YAG-39 (USS George Eastman) YAG-40 (USS Granville S. Hall) USS Molala, USS Tawakoni, USS Bairoko, USS Estes P2V5 aircraft 8542nd AAU Operations: Equipped for remote control, YAG-39 and YAG-40 maneuv in the fallout patterns of four Bikini shots. down system, but YAG-40 did not. ed YAG-39 carried a wa Each was instrumented for radiati measurements and each carried an unmanned F4U aircraft secured to weather deck, also instrumented for radiation measurements. The s ips were unmanned during the first two shots, with control provided by P2V5 aircraft, as well as the Molala and possibly the Bairoko. Dur ng the last two shots, a crew aboard the YAG-39 in a heavily shielded control room controlled both the YAG-39 and the unmanned YAG-40, wi some assistance from the P2V5 and the Bairoko. Both ships were tak to Enewetak for decontamination, with the Instrument Group boarding soon as possible to retrieve radiation records. 192 Various operationa as