f e wu not ep ws Awa ‘ . | : RGEPL UGS : . . Frow CTC 7.1 Enivetck MI (7 Sse - e ho pe QC Sen ie ie 14 v2, Lin To USAEC SFOO Albuqueraue NMex info Director LASL Los Alamos KMex Cn Fgman? ’ 410489 d ig Division LASL Los Alamos NMex Passed by other means to CTG 7.5 Eniwetok MI Cite JF E06 a 2 te For Cole info Norris Bradbury, Whitley, Reeves fm Graves. of fallout fm Shot Bravo. Following is a sunmary I plan to keep you advised of further developments and more frequently for later shots. Regret that my preoccupation with events sub- seauent to Bravo shot preventec my informing you eariier. Part 1: Fallout fis revered on an approximate line from Bikini to Bikar Atclls, and was last reported approximately 2CO miles due south of the island of CLASSIFICATION CANCELLED WITH DELETIONS Yawaii at 2:00 Pi, Merch 3, with an intensity of C,.03 to 0.045 mr/hr at 12-29,00C feet. The highest activity was evident in a relatively narrow band which passed just north of Ailingnae, Rongelap, Rengerik, and thence near Bikar. Part @: Surface rad readings ater30Pr, March 2, at Rongelap were reported as 1. r/nr average by two different type survey instruments (ANPDR-39 and NWO Scintanenter). in survey. Total offive instruments and two experienced monitors utilized Consider this data reliable. BPasec on assumption that fallout started et Ronszelap at Hplus 6 hours and natives evacuated by H plus 51 hours, compute averaze total dose to have been aprroximately 100 r. <2 Natives were evacuated by 10° AY, March 3, Part 3: Film badges were utilized by the USAF veather Detachment on Rongerik. Hichest dosare received was one badge at 95 r which represented 3 people living in a tent. RG Four badges representing the remainder of personnel in metal barracks read Lae Aroeat ENERGY Contrel badres between the barracys read 62 r. 826 COMMISSION Location DoE Ny . ne 2 3209-A Folder 0ase. *D . BEST COPY AVAILABLE -, Preeeerelomes . an 7 ’ sy eee eS De7. ey? Six atee. et 44 C4 ” /: Coe