Authority 7 7 33 DIVISION us RESEARCH AND DEVELOPMENT EDWISTRATIGN HAS DETERMITEED THAT THIS Dom er swims N0 RESTRICTED ay mm Ere kian S Th9 hit uga aar Frm$i gmt an mantha a m'y m aakg m -tm $ wva an y ur aammit aa $6 ehaavva t a twat af atamia hawk againat mava inatalla ian gin a'i agira 3a h t0 ysui I ta wh m yam aevatavy infarm ma that'yau at Wi h aw axmmaa ma am tima la ar I ha ta laaym a li tl mara 0f the- ylana fer ha taat A dral Blam y am his ataff xt m ad aawtain mimgivimga t at a mu th aman nag tagtag at at that' ting wish g traubla yam With m ainna it @G ibl hha% Eng tagt wa l ha pma pama my aaneallad Pag mvatimma far tagt may appaay ta $a P pi ly nd 2 am aamaar a laat ih natmwa4mf my mi givimg3 make my partiaiyatia 9m ywmr $ammitta$ mat 3-haly e yam at n it may maaful far mg ta watlin vary bri fly what my miagivinga awa baiiaV$ tha aha ava ahaywa at V y wi aly by th acienti ta whe-hava Ra n atu y pwabiam 1 1% ag tata tha tha wwul d tarmina tha affactivmma a atamia weapama in naval warfara if an atsmie hawk amm a ahip awan a capital ahig it Will i k it mf is tku qu ti a %9w hit mast @ha aatg yiamma far iki i thia mmwar a n t_inelmda what i ta ha th m t @ffec iva mag af'an atwmic hawk agaim i maval graft n mai um aywa ay axan m 30m Heraavar t a tt m t t aambmt mam iti n in a simgla teat h% 3% ha an aatima aa a gawar f amamg atamim w@ pan3 Far th a rmag m bali va'thgt mara maaful maul m tai a by mg al am by calaukitian Thema iffimult Eat far laga cggtiy an in my apinian wave 3 DECLASSIFIED 2 Authority 770 mam Praai ent Harry 3 Trum n Page 3 ya 3 lQ likaly t0 laa ta u eful inaigh than ta ts aomtamplaw tea I beliava that tha G$$t at th taa s planna has bean aatim tad a mura than ne hun r millian cllara Far lama th ane per aant at this aha maul abtain mnr$ aaful imfarm tien 3 It hag baam suggaata tha 'tha teatg will pyavi a 301%ntific data af graat intar gt uah Qf this infarmaa tion nch as tha-affaat wf ra iatiaa 0m pmiaon ratiana gnimala can far batter ha mbt ined by aimpl$ labmratary mathm Eueh mf it caul be shtaine battay in a ta t aaigna apaaifieally far t at purpasa and mat aampliaated by the naval avramgamamta Im my epinign aomaxaf tha mast alem nta a aeientifie infarma imn will Pasult fram ne atu y a naW' an prasumably imgrava typ 9f atamie waapmna This infermatian will mat g thainad in tha tegta aa plamne It hag baan suggaated tha$ ma mmat g grapared far tha yaasibility of atamim warfarag an mua taka tha naceasary stepa in'aur awn afanaa uraly av rwhelming affachivgw mega af tami W ay n liaa in thair far th bambardmant 9f Siti an af aantara 9f pr metien an papulatiwn Th3 prablams invalva in prayaratian fer angars are in aa shauld wa hava ta faca th m mast ifficul Hugh atu y and a v $t effort wauld ha r Quirad Ia compariaan with t%eag iasu th detail gtarminati m at th aatrucw ivamag 9f atamiclwgapgn againat naval craft bul appaar trivia Even if all samyanant wark carraatly th hawks which ara aah$ ulad far uga in haae taata hav a ahanae 9f abeut en in fiftaan 3 giving an inaffactiva that ans might cal a du wmba hava baam aaignad whiah da mat have thia waaknasa but it 1% met ta nae th m Surely thia paagibility ahamld ha barn in mind in evaluating th affaet an amariaan an fareign'mpinion - in what I hava said abava -I hava laft ant 9f gimaw I am mat aampstent ta avaluata it th cancarn that baan as t0 tha apprayriatanass a a purely military taat sf atamic waapana at a tim wham any plans far ffaativaly alimiaating thamer atimnal arm manta ara in thair aarliaat baginninga DECLASSIHIED 1 Authority 7D SECRET Preai anb Harry 3 Truman 3 3 _an 5 lg Evan if the tagt 13 auaar ing ta plan evam if the mmb g e aff a it ahmul and th measuremants whlah ara aan amyla a ava anaces fully ma a many 9f my mi givi gg will apyly ar I am mat think that naval ayplicatians ara tha impartant onas ta tes aw that tha eat as it will be carriaa ant will in rant be a gaod m aaure 9f maval applicatiana mar that tha maasuramanta which ara tar%a ma a are tha right measur mants to maka It egul well %e mm t nn asirable far ma ta'turn in aftar th ta ts ara aamglata a apart ta thia affact Yam may baliava a5 I that un ar th Giraumatameaa I -cam hatter aarva yea if-I am n92 mambav af your anmmittaa ghan if I am an may therafw a wiah ta @xausa ma It 1% my aarnast aaira n ba-h lpful ta yea in avavy way Vary aincar ly 3 @ppanbsimar