TAB A DAKOTA EVENT OPERATION REDWING 1. DAKOTA was detonated at 0606, 26 June 1956 on a barge south of YUKOCHI Island (DOG) in the BIKINI Atoll. egiineted altitude of 70,000 feet. The cloud reached an Lower cloud mvement was to the rerthwest, the middle cloud moved to the east—northeast and the upper cloud west-northwest. 2. The fallout prediction for DAKOTA was based on a total yield " . el” 3. Early PV recornaissance at 0730M indicated background readings ir. the BinINI Channel; 0.2 mr/hr at 200 feet over ENYU (NAN), IOMCHEBI (MIKE) and BIKINI (HOW) Islands; 0.25 mrfhr at 200 feet over ROCEIKARI (LOVE) Islands and readings of 3.0, 5.0, 50.0, 5.0 mr/hr at 200 feet over AIPIKIIJI (OBOE), REERE (SUGAR), ENINMAN (TARE), and ENIIRIKKU (UNCLE) Jeiands respectively. These letter readings were residual radiation from 2UKI shot and showed no increase attributable to DAKOTA, apparent on ENYU and the airstrip was clear of debris. established as O900M, . , No damece was Reentry kcur was 26 June 1956, DNA The initial helicopter survey was completed et O900M. Contamina- Sy tion levels were considerably lower than predict[a a yy o_o, The patterp,however, followed the predicted path.