- I g 3 2521 25 2 5 3 r 1 12333333102 32 3 51 mm 1 3333' T357 N24 2 0N A 6' 29 1-229 Aicrt 112 0131 deleted bcz'an 'ust life man 332129340 3 alerts 91' the Long Range Dczec ian Sysim 331 1 '63 unit'reported I deleted Jfrom Alaaka on 1949132252 2 I - EL 2 ggw a filler papa exposed for three hours at 18 000 eaten an Azr Weather - a 3f '2 6 perv vEc1 weather reconnaissance flight WB- 29 10m Japan to xlaska t a 3 4 under command of Ist Lt R032 C Johnson deleted had 1 2 'lM-w-rmml a radmactl ivity mcasurement of 85 counts per minute The AFOAT- 1 headquarters in D C ha 1 established 50 counts per animate as a trues 2 $2gm22ca cc Fhis rmation tr iggc vrnaeggive effort by the USAF Feather Servic in raking 23 - rnicsim- 3-171 Guam mic the North'Pok nd 210 1 Japan to 12323 'tlah 3 '7 15183 an ap n cp fate 12 11 Briti sh antherii 2 as were alerted W medeleted Rain wat stations 22 - i the Na wsearcn Lahsraiory I i i KodiakLAIa ha and g 01 22 sz mp35r2g 313129225 of $30553 3 52- z 1H3 I camy-lcs of radicacizvc 30m 2 32 12 was to c-c 22 31 13 353 the 2% 'Sovief' male- 21 test of by Weetgyn JJi'xic2OL an taxman- 01- sus'mz'ie-zi by 573262 gs 2 a ethical laments he as Alamos Scientific '4 3me I fgl x k If 4 1 61 233231222131022 $223 sz 0 47 1 ain t NW Wig a 3 75 Liam 03' -22 D65 06 maw wm '5 1 - - 0 4- I -- 3 13 DATE 3 Wig '5 5 r 2 2 LIZIJJ 1 r v-u2- I i 1 mm I proifidezl unambigue w evidence that the Son-iota had in 1 cictoneiing a plutonium bomb Rain water oample collected l2 ihe NR1 zmd analyzed by the I lle LASL and the Universzo or California 1d infion i 5 Laboraton 'provided voluable confirmation of JO 1 Finally the eve roll resulte were doubly confirmed bf dew air sampling Operations and rediochemicel an iysis I Ifow did it happen that this special organizatio years before the earliest estimated time of a first 1 was in existence two Soviet nuclear test I ivmuanmum I The story goes back almost two and one shelf years 1 iefnuaryf 19 17-when the At omic Energy Commission ABC took ox funcltions which had been under the Manhattan Disti- iet comginiesioneie Adnairzil L Strau se m deleted i - 'r in I iavel Inteliigence K ring World War II raised the Then shortlv af l'e 5 92 13 16 one of the who had been q-uest ion wheiizer i - intelligoncc arrangements ii af ne upper atmosphere with the intent of 3 had been made for monitoring the radioactivity discovering whether any other a 1 the Niels 3011 Library AMERICAN 0F 9HYSICS Coilegc Park MD this copy nor the words on it may be reproduced any form WithOili new Weii i1 wotooer 2 A 7 a General Hoyt Director of GIG had que eried Ge 101111 Groves Eggfogw43'n af rxg - of the hianlia ctan District deleted 17 but since the Li an tacten i District affairs v- 1 in the process of being transfer ed to the newly 12 th ABC General Groves was not in a position to common for the new - After conferring with General andenber '7 and Dung that no monitoring system was in effect or planned Adr w I urged the appointment of an inter-eervice committee to Btu-21 I rvwl-gtrv - - C and rccom mi 21 provisions of the US copyright law this single cogy was produced for reference use only i 2 Linger the fajx use hump Mum a an 1 - 1 - -I in earl Mar 947 Gone-ml nvi tho no of - 'far and Navy 1112 Chairman 1 c om 4 -Rcacarch and Development Board JP D13 to furni n rec-pros m - ivoa uv-a u1 o sit Long Range Dot action Con mittoo when gnu a plan The committee met 21 May 1947 and cons 6 06 Gaptain H Rivero Navy Dr A K B Novy Colo cl William M f Crcgoy Dr A V - Peterson Mr V T Golden or 116 words on it may be repmciuced in any form without written r Colonel L E Seaman Brigadier General Karl Haog 3 Colonel D Keirn Lt Colonel David Parkcr War Colonel 13 G Holzf man Army Air Forces Lt Colonel F A Valonte Dr E S Gil llan Navy 3 and Dr C S Fig gott J RDB dalet uwm Their i 1' ff recommendations were accepted at a meetmg on 6 Inc oodlomo'goed 3 3 June to tn Secretary of War Seoaetary of A Mr Clmi mm 0 tn 1 of Joint Research and Dovolorx nont 1309 Jul with and Chairman I we Niels Bohr Library AMERICAN INSTITETE 0F 9HYSICS Collogeiark MD l fhis copy 733 45 foo Aomv Air Fog-cos bi utulnr g 3 4 1 mg im nations 1 3 vrcen the gym 113 i lbility for the _pro eot Subscq 1on1 con I rcsulted concurrence in ezirly September and on 3W6 eptomocr 1 23 - of S o f of Army Geno ral Ds 1 11 Eisenhower deleie d w A G ni ral c- A 5311 but Q- otomio explosions 1711 3 1 3 0 3 '33051 Forcesxi 1GC worloMajor roxG moral Lcl vily Deputy Chief of Staf Rial $0119 2 i I oxtcmivc Under the fair u se provisions of tho U S copyright law this single copy was produced for rgference use only I t 1c maps msibilizy for Long Rimge m in mic an k 1 Gait 11 194 General E chne rim deleted general Key-2 2 1r Spccial W I capons A1 inuna iatcly convened representatives a mare man 2 I I I 'v month assigned ca tain major acctors 01'sumta of the Arm Navy and Air 33 arcs participat l he in rcasing tempuof the work resultedinihc formation'within - 0 xer this mpy nor the Wards can it ay hc'repmduced in any farm mmnu I thc Special Weapons Group 'undcr Major Gegeral Kepncr of a - Long Range Detection Division in Deccmber 1947 hepame-lmovm I i as 1651 wa Air Force Mat ricl Special Weapons-One unrOne-0 Maw Gen-aral deleted 5 1 1 hin rst steps was to secure the rviccs of Dr Ellis Jo r 3011 as 11 1 Technical Director who over the law months rec 11 cod staff 2mg prepared a research plan for long rgnge de ector of the I 1 the Mela Bohr Libmy AMERICAN OF PWSICS Cailegc Park MD 31 EQtfv zz 13 12 27 gr- 7 A I is vi 5 43 Alf-Earlyin the planning wages 1t was tnat 11nw- rxT-q 13' detecting atomfc c 2310 mn by 50 11111 waves 3 me 91 71 19atta Eye-othcr gar-wk 's cnl 11353 1 the co cct50 and am 3'2 05 of nuclear 5ebr is Wzin lespansmuzt - - 6 cxi ca pic co lacticn as 3131196 to t c 32 12 mains 002 wa hamsdike - award 1 42 0 232001-31 of providi if J bgramg my lyii'cal services is 3 13 cm the fur 4 Under the fair use pmvisiuus of aha US copyright law 17USC167 this single copy was produced for reference use F mt - - - tom her this cop nnr the words on it may be reproduced in any wilhhulxrittm permissium AN OF PHYSICS College Parkdeleted It cousin tad of nuclear debris collection by an cran ana m- W Under the fair use provisions of the US copyright law E7USC107 this single copy was produced far reference use uni from the Nieis Bohr Library AMERIC on tilts to it o Tin-Til 1 3 51 LBIAIIJ a -ch prior to the tests a skin 1 a outcci and arrangements made to test almost all Offth detection ti 1 augg etcd Liajor responsibilities were asaigncd the Army Sigml Corps the NRL the Air Weather Service the Air Materiel Command the i 0 Naval Ordnance Laboratory NOL the Na avy Electronics Laboratory the USCoast and Gepdetic anti Trace- ab inc At the conclusion of the SAIIDSTONE test cvaiuation of the long range latte-tic d techniques provideri qualitative confirmation ofthcir utility However - I the cvaluatisnalso revealed major arcas'which require-cl additional - i I i - a research anc i deveiognz ant 01' 1'0ch in in of detection 64 31 53 meat 3 gig Air All in all the results wezfc so cnco 111131113 at in the summer of 19-11 m 3 Mm ggtablishcd an intori im Surveillan cc Rev-93 41 deleted 'gz'ourzdwicvci tri ltering equipment operated by the Air 5 catlzar Set- axes-and a network of acoustic Stations operatec the Ann-J _Ai ngemcn ts were made with tbs to PJwa'lLlC 53 er 2-3921 L-Lag- - - I M - 1 300 06 ch on algmxicrn events to 3 13 31 3 Anal mirin 13 Res Came A which waspstablishe in 1222 661 Xi ashi 3021$111 the last 11 01' 1943 further evaluation of rc 512 33 obtains cm the TDST 3mm led to 05 an research 21 t mu m WH - 11 duties 8 c 5 the Niels Bohr Library AMERICAN OF FHYSICS Co ege park MD this copy nor the words on it may be reproduced in any form wiI ' m permission Under me fair use provisions of the us copyright law UUSC 107 this single cog was graduated for refemzzc use qggy f 3 4 4 4444 u J-Js 444 CI I 4 - ogre 3 development pro 1er sh was dame- 1 cssc t xl - net oled b3 cm- zi'c rcc to be 11 51 effective examgziu gregari 4 4444 hem ze N211 5 1 5 33 le -5 1943 i-ecounted their in rams-raring nuclear debris long after hc 4135 spring esta ram race wa i-rc in th Virgin 1221 21 13 am 4 1m result 0f this 1 1 25 3744 i arranged in 5 5er 523 194-9 t0 provide financial su apart for a program NRLEO develop ra iochcmical techniques for analyzing large amounts 4 I I kof rain water and 0 build several precipitation stations one immediatgly at K diak Island nd others later int c year deIeted staticns wera w be 44115133596 coll c on 0 1 I 4 -of rain mats-r wfaich duriLg Ramada could b- - nova to col cat I 140655 251 was priwa- 51 51332 iomng any articles on the roof WhiIe the at 1 05 Nav- 5 rcse rch progr 5 nit was also consi cred a of the Intczim Res such r 1 c 414cm c 0- cal i fi in 5 1 232 5 12 new 22 553235 - Ey cnmve research 5-0 3'31Wa5 5 11555 55 88 with anhm 355137 magma - 3 11 5 government 5 bsrator a 1 5 gzagrgsical tech an M53321 131 01 do no c -a on 4r'44444443 arranging 0 c2 L5braiian 33 4 92 52 cuts on US mm cc - teats9g awn- n within AFDAT-J arational ex p'czxencc wag Jung 444 the 115125-5151 ct Tne c were promgns con mun1cahon ta - - 5 ice- 713 1 overcome n -cch 4 my if 3 3 150565 03101 1 15 13 manuals 33 W1 criteria of 1123 135 342 0 g 6 i i 1 refined 51nd 11301 11' similar yrobicmn O m tcsj a the laurel of'gigniflcanmnt_1001c01 mts per 1 21 1th 1712 aerial lters mam E's-1 1 - if 107 1171 1 f- dl b deleted - 1 2233 Immigrawan into effect an 1 A 132 at 39 5 11 leyc1 3 gl vuL Laacw a 1' 1211 filters wan dropped to _50 counts 12 11 minute based 011-13119 gained in the inte rim geriod Du ing_ ns time the Long Range Detection 1g Syatcm camerienccd 111 Alerts Each of 1hose alerta was treated as E of a posgible Soviet nuclgar test but each was pravodbeyond 3- cdoubtto havc berg 11 11 to 31 11 11 mtur caumap w 101 mi 22 a - rm 10910113 miimuz- 85 1m rms variations innit xvl backgraumi t 'lfhi f hcn was the state ofaffaix s in zzn'r 1134 333 11151 gum'ej lagca 119 gs $11 11 iinlihc yucca 95 1 1 ziz'c i and 4 23 an extensive 1m e211 p 0111 3111 may heir ca rivl -I i 2311 I 1 3611 3 103 913339 61'011ing 3 September 194 hrs 1 111le 1715 received 11Egan Center in hashing ton D C - rat ii 31 fth z3 t119a m hi 11-3 200 at 01 211 th 2271 31 11 4191 m qm ec in Alaaxa 3 323 411 WEIIZQ landed But now the compgnisn page had 2115 been c0172 11 Under the fair use provisions of ihe U13 copyright law HUSC 107 this single copy for - '1 - 3 shmxinbbg counts par mm ul l 13 13 1121 1529 2 33 91 Jeni talus- 1171born 01 f0 Eqmcn cssi' 'c 3m 31 AlglauJ iv 1 Hui 4 IXI-Vuout 0-0 g t clol I MW 12- u 0v 1 9 t o 1 I 2 5 1 1 a hal- yo-qmd an 9 r L5 szv a 13 at 5-2 523 1 I 1 nacmmo v I ll 5 g a p tv'antavi y 3 23 5 13 Kean i a 15 Mien 5 21 131 - 1 atmosphere 332 wag it 1mm 1 133 15 Monday Labor Day'staIIamd ugly on the 12 75 this copy not the wards on it may be reproduced in any form 52 ng mitten peaniss mn filter 153 1323 of Alex No 112 Tews wquing at Air Forms 1 Base in Alas1 a under Captain CarrolI Hasseltine dejetei - Um 115 80hr Library AMERICAN MSW OF PHYSICS College Park MD I of-J r iicathc Garnet cgntixu c hie 515 if mac n15 cveryh twahf 91 9 I - ve-33 43 when cried - 1127 onl- tr z _c arm 13 1 3' 111250 33 1 211 115 9 1 Io 52 21 023 111 11 211 5'1- I T are 1 1 3 119 -111Emi ide4 1 w- - 1 - rm 1 Gf_ wicmberfrom he 1c3dizw - - was 3 11 23 32 1Pacifi 4 11 13 1 3 to 2123 11 20 were i Eedxfic lde uisu v1 5 3 1 3335 5111 03133011111071 Mgnday to I tax the er i zi hc Sea to Aias1za _ 03- planetraxersed the Pagif scan some 6115 722 423 I S'zmst'oi 112 US Ca 33 a the o her Inland Lake 3231 1513 W- A - was be 1 15 In lasim to search ns area tome 1903 anu 935Beaufort Sag - - Under the fair use provisions 03113115 copyxight law 171138107 this singie cepy was produced far mference usamciy 246 1% c keninrr an 2J2 report Irozn n d 1 a w a ow 1311 5 0 om Guam to Jam epo cd 233it may b' r' gr duccd 21 this c py nor the w rds on 12 5ng CF 122123165 homage 25111 161 0 22 N221 Ba grams H36 Unde h fair use pmvisions 0111 11 5 'copy ght 12w 1711512101 this singk cofay was'girodu i i for ref Wm withom writmn permission - mn of long-Iivch acfi ty bylh surface 2113-37 o 3 mo ls it Juata rm ow 0 radioactiviiyf 131152-2223 20 13mg - 1 2 1 32m 12 sent the 1111c png zg- 13 n5n q 13111021112 by syccial 2213 32212- - 2 51155633111411 2125 C13 3 363511- '1 3 331 2 L 1 23 5 11f tbring units at Fort Randall 21nd the Alcutxgn on a I - the 51b and later by a- station in Nor-theirn Japan 011 1116 6th The-111111211 lter-paper dispatched 1mm 1511 233 222 2112921221 er ab 121 Cal 1 10 2313 2 1 I 1116 atly-afternoon of 13-2-2 6111 Reports of 111 1 122220311123112 by the a 03111212121112 to Alas 2 rs man-112cc that day 213 1 1211 on 11112532112232 1112 epapcrs from 131 1 1a c2122 1 Wamzfi 315 1 5112 225 232 1 30 v 1122 I I - 1112 121 113 arrived 22 1 Tracg abg deieted 1111-232 thirt'r in 1 10 mt 2 1113 11 7 Sc 3 32 13 2 133 2 of M m 3311 5 131 1Heceiu 12 2 ca 13 12 22 353 31 30 2 1 15 27 125221 a 18191186 2the T122 cc ab 12 bor2 201'7 121 Gal 2 22 sienna tic-n 212 2 2 5122 150373112 and C rium had 1252 1118 11 15 0 and iiV-zz 310 125 1 232 11 13 - 1'21 150123 24 011 2231 was rs 232 681 sent 021 121 51 5 - - - 73'4 l-Azlj r-Gancral 2-1 - 0 23 13 22 11 1501 v 4 27-12121 $0113 129221 21 02 62 1131 2' 2 22 2-5 3 22 I I 0 a 'r gua as many samt cs as feasibleSmarcs 32 5 1 inc ocl l- m sr- mcva-chnt a immcdi cm 1y 1 33 fr ca 0 a 2 I airiiclc'i 52cm Lacirscn Ju ska 6 3 cmavzzr 1 x 4 3 31ii - n 27 12 Ms yoga le am it 59 I rAAn sample oithc nuclear as possible 121 sawbuedirzg 12 18 311 041 betwcen 3 and 16 September at the direction of the Air a Wmor it mama in Myimouc wrimzz missing 0 4 'Weathe-r Sen- ice veatorcd 92 special filtering flights which sampled a fge'n r area from 1 1m to the North Pole and from Califsrn ia 05 c- 3 132 SOQ hampzep deIeted I a - mama-m Mfr Ehe ight crews ha- not bear 3 2icifed 111153 021 of - lva 6 35 13 3% 0'33 icly - 6n In 1123 s Lu 1 i3Ct Of Efa'f ur liiucbvuu Jim-V I $21926 hug on 2 31 Whiz thgpufsporfe wars$16 45 53 3 53 if 3 6 Fin 1 fax-S 333 1 1 ng i n -wa Yu fh ne 50 1 go aw r a3 sure 39 3321 5' tmodifm am 32 13 rs we 0 531313 335 21 55110 0 mugn inter - 4 24 1 5 a 3 1 cqy pmc 22 1 ail-1 'e '31 a lil'cr 3 33 3 czaragc racy- npq L tl of a 5 5- -2 nd 1055 of cabinExcsiingu 1 than 1 20 anou 3O - - s in 3 min 9 7 1' a Irv- A 3 ar d cahm 1 22 12 1 31111 2- 1 12 '13 3 tiqiaaf fr-mar Gi wh vo 05 3 11 DC 101' u Luau-wax 15h 18 hears long this became 1 r6111 Unde the fair use provisiens of the U Sz6copyright law 17USC197 this single capy was produced WWi MEEW - - I- -R f - -v rosn haxdahip farmer f0 33 limimd waywa u 215 a 9 7 I v 14- - inhts yarioda 372 3 2 92 i e 7 A11 g A n czzi Sci 0d wr Mug- 3 r 23 - Inmuiz aaz'p r3 17 12 52 23 20 12 In 535cm53 2 z Ev Tic up Tabzis wasn Emwm 3 121 22 2 2 law-Meagm cn $133 5 wean- 2231 th as an inmvef I i -3Vashington D C An Air Weed her Service unit athor Service cm i part of me operation Captgun Jerry Glover of Air We it in the fra actcr7 2 of the 591210 members of this group 2188 54 pr i i 3 lliarr M21107 12330121221222 5 and wi m the assistance crtfi m- $125 con rm 22 21 civilificv 31-1 to he success the 032212-53 Vii IE resaits durmg 8 2 12 52 ch ingxca cc1_u c n 3012 - with 22351 V7325- horns dabrm wag 62 232 ring v f 5 r2 5 2 311225 if heap ad 01 f 22 132 1 is 122 222 7 321152 Esau f c f 0 1513 23 30 and or atlas 1r Carrol Wilson 12 12 11 i2y011 I 38$ 12 22 F2222 22 - 4 2 3 123 ppxc ml 10 22-22212 tar 22 222212- 221 s i I i IlldeIeted Und r 1 25 use grovisitms of 112133 copyright law NU 2' i W awrgThe acclicctimm 12-13 sumseciz 3 fdr ut 5 12 11 22s 9 53 3 1 Hoyt I $ 1531 13 stanon by 1 2 i'l hvdesccat '3 tun Lin 5 fifth was discussaf 1 x 1 x 05 3 1n Ci- 1 and the gent nut a a LunZ in WI huv-m tion At about thisthis copy nar the word or it may be repmduoed in 5 time the gamma ray at Kodiai tasked to show a rise it i uactivity 81 bacq1 ent1y two main collections - the- firdt from 6 12 Sept cmhca - 0 andfhe sgcond from 13w1 7 deletggw J- I were found 5 to contain large samples of the nuclear Tubs belie 6 1 it impmatiyc ti 013133 13 ccz armai r3P - mm PME afe g' fakksee Tue-ware Ln 2 21-3 11 1mmSqr i CO l mlb C'r 5110 Jl g - iuul A J 4 of fresh fissionproducts sample 1 1 A - - 8 1 71 1 319 2 can no 0 i was indicate -4- v-a-cv vv-t why s vMTv- n my 33c ca 9 53 Ice- 2 3-1133 m 13 5 5533 @155 NR1 at as au npcarsd to prgn nse macsrger 132 1 1133103 of ebr 3 5 236 Kama sump plane on the 192213 of and remit men ATOATJ about 26 5234 21 13ch 16 Traccriab Inc had Long 2 25 and rspac cca 5 E aft- ies on aerial fiita gapcrs analyse E G tijn' of 11m origin skim-3 and the type of fizsionz zlc uzm 3 2 D 8 away - - 3 3 53510ch ma 6 211 332 23 t' and cf Inc SA STOKE ice 3 that 3 I upri 22g c5 19-23 Traccriab had been engagcd in rail 0 3 59 - Cua 1 153 eon at $6651 - it Clwu rn co a t1 3 3 1Seth IQ Jr 1 gait I In a 35139W in dirom 11mm mm mum 5113 Stu dc iy 19 I 5A3h3crg a 45% C - 1 33122 33 at LASL who arranged for the rad a ic-n that I - and delivery cf the sample to Tracerlah in Califarr 3 5 cm 9 see Reference 11 This rm conclusion that large amr m a com net the mitts normal uran m n were emplaycd in ihc'Sovlet deviate E g I iparlypin m was cf 11 Gcixc uzzarri a 37 Nelson 995 2 i 2' - vi i cd Dr 1 Bush had been i vari mc- head of tha Office as cicnti Research and an reg wafed 2 31119 can acne of 3' Fisher 33 33 33 4 Niel @3329farmer as 99 5 Jhbv' Dr 5 Robe-Ii annulldci unamh we m Enema LASL we rst US atomm 3 39 359 2210 Jamiland glam- in g mamas Who nun been an $36 Lidia ttal l 92 0 and 31 Ccm Cnairman cf MD - renew and eve 11 35 i 311 the ava m c _i for 1ation an El n significant event far-the 13 cf - 0 GB Sufi of he Air e 33 General 33' i iTPc conference was hai'da 043 1 1713 32 Vunhmgicn D 10-30 hoursnn 19 Sr - cm zer wan me slim-v4 4 9 3 32 mt 311 518 336 capywaspmduced far mfemcc miy frosv ALI manh I I the mr L433 m 0 a v 5 12 95 7 Aumlrg ms I mTF 1 a Jan Amiga gup uni gm nu -d u inl ed I Iiztw om a Lr 231113 110 Penn-'93 deleted deleted 'jdeme d - deleted yxitcd-Statca a General qut fanienberg US Air Fare Chic v oi Sfa Lt Genaml If Norma-C U5 Air 0 13cc 3 Ma ajor G'zna r33 D Claim - AFOAT '3 Lin General 14 Nichols US Army Mrv 1 121 23 1313 0 302113215 signer 1 I Mr William Webster Depart mat m fen n34 Chairman 142121 137 - 32 9011 I 15 Cm 1 393 555 fg zggr a 1' Spofs ard L1glian AEC Chief Chem cal 3 'ar 21 0 p135 George Weil leC _ Chief - Production 231315031 'Dr o Frederiqk CL He_n xigucs - Tracerlab Inc Dr Traccrla Inc Spence Lea Alamo Scientific Laboratory a Colpml 13 G Holzmn Force DOE ARCHIVES ngr A Tracerlab Inc J's n2 3 R Smi h Office 1 Pest-a ch -Umto States Conferteeq can MIn I 57 Majer 2 223 13 2 593 3 hence 1333- 30 - lie- 1 3 $1531 If Jed v 27 a i 11 3 Quilt J J 'ul 333 3 2331 I 73 3 3 23 3 nae 4 Jr 3 1 11en Cracker US Air 1 area saistant Technical Dirac or I r George B Olmsted US Air Force Assistant Technical Dizeetor 4 3 - - Dr Donald H Rock US Air Force Assistar f Technical Director AFC in Wm or the words on it may be r prqdueed it any 0 GEEK X1 I - Humg mm 72 6 E1 The evidence left no eoubt that fresh fission products had been - 0 81 detected no thetihe aefezxaty can 3 ram 9 3 3 3 335 5 urea as was ech-ent a 10m the 1 2 rge edispereio of the debris The key paint which the pane no 1 av I - - a bed to commie was whet 213 he eemm 03 13 3 on an diomxe Luke 3 i f - fan q f-Vn r In 4 a 1 w c 64 13403 130' 0 31 UU st Lc' NIV If 34- lL v-I- - v$ lu 1 - I 1 La nun 3 a a in fur A cenfas len 4 13613903413 em 3 3 Dr A J - Stevens and D13 L2 yd Zebu-M 11 which pzr iwieed the decking factor Dr Spence from LASL confirmee Lop res once of frish fission A Dee 3 products in the aerial lters analyzed at LASL Mr James - Smit'ln Office of Naval Research presented the wexk done at the by Drs Peter King and Herbert Friedman which skewed fresh fission preclude in t1 aer 11 filter sample collected by he Air Weather Serviee aizczaft and in tne surface air lters collcei cc in s ashingi-c n at NRL - W i deleted 3 deleted Wp-rnU m Ma v mm hwj 3'33 e v 15 - Under the fqizhu e provisions ef ghe US law this singk opy was progt lgsd for reference e wily from If IM1VL1MM AWMW 1 1135 1111 11eted 1 '1 i 11 I htt rand cane Pium that 13 01 11 12 i 31 a 11- 3 E1 1 with the that 1 11 orzgz 133' the fission 332181311121 111-11 1331- 31 91 50 -1111 11102'11 bomb 1 112r1sc1gzuc1 1 11 11 1 11 2 111 isLamb and 1 3121 the mqolosion occurred bat-1111 2611 the Birth 51 11 11 B Jth 1 1 1 1-3-51 Q 17' g at aqma pomt between the cast 35th meridian and 1 10th 21111011161311 over the 5 - 28 A81atiQ1and mass 1111 1 1 1 110 g a cane usions c pane Mdeieted 11 19 September 1 9 1 LL 3 were reported to Truman on 20 The public 5 1 1 - 1 12 111102117110 1 12-1 11 11 1 111 11 1 11 641 expim d 15' 1 mac ig by chsidcm 1 12 on 1949gubseguent to rams-1v by Dr Bush s 33 21 21 111 D1111 - Peier and I1 111 1 3 11131113112 13 1 2131337121111 of the Naval 31931 31231 1 22 21111 sh f1531011 1321011111213 11 111 0 11111131131112 samples coizecicd by 1 1111 1 111 1 111111 111111 1311111111 113 23 111 12 1111 1115 1 5ai 1 2111 1 19-3 15 11111111113 Mau wm - - P1utoniu1n 11 13 18 16111 01321313118611 1113 Efrem the 13in 111511123 5111131191125 23 11 of 4 1111 plutczziuna was sent to LASL 1 133er it was murificd Vans vcz i c 1 111 more czctailc 1 radiochcmisal analysis It was then analyx 'l 11 3111101111 of he 7711 111ch of California and in Jam 1950 1117 0 0 115 11 by D11 33 13 WM - 1 8L deleted to assess an isotOpic compos-ii 1 10 vhich -mww M I demonstrated that the plutanium had been used in a nuclear 9 1310351011 111111011311 accusiic records carefully 22 11 111i 1 051 time 11 13 1' 301111111 10 signal relating to the event were discovcz cc1 1 z'cvcr I 5 1 E33116 the fair use provisions 'of the 11 3 copyright law single commas produced hamm be regreduced in any fem wimozxt written permission a @5392 no le wards on it ma Pm CalizgiRark Under the fair use provisio s of m 'uiS cepyri ht law 17USC107 this single copy was i 3 - 4 v feuheeqeent review Ithese rcce 13 7113 These 39 1 Jen-3t to establish the laceden time em 13 L- $157 the' excellent wex- k done by the agenei 5 Dear General I un' utl tuo m-iud v 2115 were very useful Legun 01 3 u Vandenbe g On September 20 I reported to 1 amination of scientific data in connection recently annex uteri This review was made by i'l emel appointed by you consisting of Dr Oppenheimer 331' ' Bacher - Admiral Parsons and nurse 3 i reveaicd mels ute giif nee Macy ltu 71 5 3 23gen 3 i es in rolved you the results of cx with the atomic This Panel befere if iadiourncd authorized me write yen to commend the excel- zilent work done by the agencies invelved particularly by the Igroup under your command 20 i no c only with the qu -Lu Jlei l hiya 3 I 75 i foresig exhihited by A 'ring the need for confirm I 5 hunting inthe short time availabie the ve y W J L u r-1 7 aLecn 01 C051 - avdeleted nag e ii 3 y a 9 bahuz e 3332 1213 L-US fxf f fi T JS the Naval Rezeareh Laberatorx 4 entire 5 with which it was presented lfxat by its excellent performance has giant collaboration from such agencies as the cnt5fic Laboreto of the wane deleted but I was impressed 3 3 50 with the there rim juncss and skin exemplified in the Traceriab Inc Air Weather Ser iNeval Research and the I faval 6 0 itake great pleasure on Dex-1221f in 4 3 3 f I turf-Ly and the ef- It was also evzcient hr uvolved for remarkable and effective performance - i carly and that it was yushed with - This is one 27 It is forimxate that the Air Force institute 71 - 31$ 3591ean 4 y thereugimcss and 1'taking which has most cerminlv q I - s U 1l Q 1 I that the panel had authorized _him to commend 1 i 32' 51 4 1 2 6 55PHYSICS College i ark - 4 1 -aaoa a a 'his 6 opy act the words on 1mm be reproduced izi gny form without written pgrmisamnandn bitCcio ar 1 3 9 rem T1w runsasks to General a -1 3 J 9 This document is from the holdings of The National Security Archive Suite 701 Gelman Library The George Washington University 2130 H Street NW Washington D C 20037 Phone 202 994-7000 Fax 202 994-7005 nsarchiv@gwu edu