going requirenents (b) end (4) end the expressed cesire of the JIF Commander thet they not be mavad. Because of the edditionel require-_ ments for early helicooter survey trips end the carly cispetch by relicoptor of an emergency eirfieli crew for the cirstrip on the ENIM i. Island =roup, the large shipa were retained generelly in their pro-shot positions efter the detone-tion until about C&C, when sudcen and renidly increasing reclorctive follout was detected on some ships. at this tinc, all ships were ordered to take all possible racislogicel defense damege control mersures, includingthe exploynent of weshdown syetema, end to pmecnad to tha south et best speed, Commencing about O800M, highly radioective, visible, white perticles, sbout the size of pinhescs, bvozgen to fall on BaiROXO, FeILI?P, UsTSS and vvRTiss. from ground zero. At this tine BuTROKD wre rdout 51 miles In spite of the continuous use of washdown systems, concentrations..of up to several roentzens per hour built up on 3aIROXO end PEILIP (plane sverd for 3.IRCXS), with average reacings reaching 500 anc. 750 mil:iroentzgens ver “sur, respectively. The fellout pattern ws not symmetrical, since both STIS end CURTISS, émmréximetcly the sexe distance from grounc zero es 3.IKCKO but on opnosite sides of ker, received lees contazin-tisn. Other ships, including those which hed been moved southwerA betcore the cetcnetion, receiver none of this eerly fallout. In acdition to the early heevy fallout encountered by some shivs Curing the morning, in the efternocon an? oarly evening of 1 laerck, 3 2e-7