7 " aCP ae --3ES P-O1G fF. 7 HEADQUARTERS JOINT tase FORCE Sivan " APO 187 (HOw), c/o Postmaster San Francisco, Celitornia FEE GS "Sd 1a:0 een \ ATIONere” Srp - 27 ° - Lo I ada93 bed. AW Were wT Te oor 74 - eh iz April 1954 ‘= MENOCANDTR FOR REC OXD ae SUBJECTS 1. BRAVO Shot, - PURPCSE: Srem sies ee ASS eration CASTLE To make @ Reve T 3,ecord operational age pects that were considered prior to BRAVO event of Operation 2. GENERAL INTORLATION: See vege weet CASTLE and to analyze the resultant situation in light of available pre-shot and post-shot inforzetion. Operation CASTLE is pleaned to ld consist of a series of seven detonations at the Pecifie rroving ‘ee peed. pare ecrrery Te onwene! Grounds, which encompasses Eniwetok end Sikini Atells. B324YV0 is the code nene that was given the firing of the first device, SHRILP, at 0645 Mon 1 March 1954, off Namu Island, Bikini atoll. Subsequent to BRAVO detonation radioactive debris fell on certain inhabited atolls of the nerthern LMiarsheli Islands. Reaciation intensities rose to levals sufficient to wasrent evacuetion of four atolis end ell persanned were removed from these -atolls to Evajelein in accordance with tha operational emergency Plen of JTF SEVEN. are indiceted below: Areas evacuated and gamza dosages received ATOT, PORULATION DISTANCE FROI DOSES RECEIVED a GROURD ZERO Adlingtoae 7 79 BE 80 R (computed) °" Rongelep |; ag 100 HK -100~150 B (computed) _. RBongeri a ae 1S3 NK 40-98 B (42m badge) <= | Utirik a 154 B70 ML 17 B (computed) (#7) 28 ameriean Service’‘personne; 25 USAP Weather Detachment plus 3 USA Sisnel Corps personnel. All evacuees are under competent medical care. S. PREVIOUS EXFERTENCZ AND CHARACTERISTICS OF NOCLEAR DETONATIONS: scedioactive debris 19 en incerent crsrecteristie of ell nucleer detonations. It originates from fission fragments ation (Cancelled) (StenOa) pie ears hh yadicy TOO ameenioe N 7 q 4 1 genset—~—"3 a Howe. uel AQQUTTEN } BETes Fi COSY S23 if :