a faa ahh Bd . eee3 : - ekef pert wae oe ce Fy . rere RR eeanaa edSaecn a FG peer pil 3 wii .we - a Pe an “ ae aid - A Biss hh BRPISLOOs112 eg TR ae _ r ry " : ue if ye 7 . * - THEQUE TL ta!ne ISA BLOOVESS Id - Cater of stash, Ue 3, Aray; Washington 255 BRC ISTs , Gaal. OCT 3 1 1954| <ae SUBIEOTWesyone Eefoots“Prograa for Operation IVY. :- 20s A i ° ae iY OPIES,SERIES «#0419S Hy ‘6 later dated 18 iugash 2951, the Atauto Toergy Comdseton . informedthe Departuant of Dnfense that She overseas test ef taracmalesr Chief, devices previously scheduled for the spring of 1952 would be postponed anti, the winters of 1952.53, Recent informal bat reliable informationis Details of the device te be tested are not yet knownand probably ‘wil nob be available untilshortly before thetest is conducted. Howaret rE Be tions In addition, : ; i j e t ei ‘. $0-8eunderstoddthatthe expected:yield’of:théthersomoleaydevicewill yielding about 500 kilotons may be conducted, . : military BEST COPY AVAILABLE te iit £ ef : TT Ze tir be prepared to cenduot the next thermonuclear test during the period July~ September 1952, A mecileus of a task forces capable of accomplishing such a test exists as Joint Task Foree 132, i i ~~ be ftPSPY te the effect that the Los Alames Sciantific Laboratory will probably be DATE: LTH SACL, he ein 4 a ch Declassified by DNA , Fs > y , i ps re aoe mr ay ayePOST enrPeae Wiese - ae: 3 $ tats At the conference, atentative program of weapons effects measurements was formilated and is forwarded herewith as Inclosure 1. he In viewaif the difficult Logistics involved, the very restricted land area available at the test site, safety considerations, and particularly in consideration of the very great range of uncertainty as to the yield of the thermonuclear device, certain projects which previously have been associated with weapons effects tests are considered to be completely inappropriate fer cenduct of this particular test, This is ly 80 of biological tests, structures tests, and tests of military equipment, ‘In lieu of such experiments, basic neasurenents should be made of blast nd radiation at Operation IVY, while the objects themselves are more onveniently and economically exposed and tested at lower yield tests _ REVIEWER-DATE THORITYDAOC HAG M.L. DETERKINATION [CIRCLE CLASSIFICATION RETAL LSZSIFICATION CH ONTAINS NO OORDINATE DA 4S | G&SAZOB20009!