. LON S ‘. TAPLS 6.5 - Shot 1 Residual Gamma Activity on Cuter Islands Location Gamna Activity r/hr at 1 hr Ailinginae Snibuk 92.5 Sifo Lokonikaiaru 77 108 Ronzelap haen 2420 Arrik Lonuilal 1950 1950 Lukuen 1260 Gejen 1950 Eriirippu 14290 Kabelle Anidjet Enialo _ gosen Rongelap argar Sniran 1050 737 264 342 197 132 316 Rongerik Bok Latoba’* 770 385 Mortiook Rongerik Eniwetak 347 © 308 216 Utirik aon 26.6 Utirik 20 Bikar Biker 933 ganna field contours were constructed. This information was obtained by completely analyzing the wind structure existing at and after shot time with respect to its effect on fallout particles originating in tae stem and cloud. To establish a pattern on this basis it was necessary to make the following assunptions: (a) The relative contribution of particles less than 25 4 in diameter to the residual gamma field defining the area of prinary falla out was negligible. The particle size distribution is the same at all eleva(b) tions and homoeneous throughout the visizle dimensions of tue cloud and stem. ‘this assumption was arbitrarily chosen as tne best 83