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formed him of my conversation’ with. Dr. Bugher’and.‘hipiete

behalf of the. Atomie Energy Commissionto provide “financials
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support for mariné biological studies directed at the. long:range
contamination. of the Pacific. Dr, Kobayoshi, through his.
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interpreter, expressed his appreciation for this’ offer but:imwee
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With’ regard to‘fallout. on the’ Japanese. ‘islands’thgmeedvesy
fee? ‘.

it is to be remembered that “the>position of these islands” in, ?

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relation to possiblesitesof weapons’ testing is. such.that, the:

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Russian testing program is’ apt to produce’more.fallout. than;
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estimate of either the Beta” or Gammadose “the fishermen: receive de°

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We knowthat the ash’ fell insuch’ quantities.that, the’ deck’ of5 *:

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of our information on how!much _ash fell’ and“how long’ it”“remaineds

i-th hee ‘ship bécéme”white,” andthere’ was “sufficient” material tork.Ee
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Estimating the. ‘Whole BodyDose: UAE
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events In the Marshalls’ orNevada’2:
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When the vessel arrived:in, Yaizi"much: of |
moved. rw 5 33.
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on the ship. _ Thefishermen’washed “the,“decks inorder’ to“remove! ;
the ash’end ‘according.‘to their “reports,their.epee:Was.‘effectiveVoce

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Neasirements: made by various: investigators ‘during the: period’ .

between March 20-26 are inagreement,

_It_is curious that the Beta-..- |

Gamma ratio is about 2.. This would indicate that, the bulk of the ash™ ©
had by this_tinme penetrated to the porous” wood “structure “of the £3
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Geck, thusabsorbing- the. Betas... The Gamma radiation”“Over|“most.“of-= “2

tne ship. was approximately,40 m,r."perhour _whén’theship~~arrived:,
in port,’_ If we extrapolate this” back té H' 3-3 hours;-the!wtime> 4%: <7;
the ash began to fall, the’“integrated Gamma dose is_adout100. RE 0
oe course,

the’ ashwas”“falling from H plus 3 hours to. ‘about H> plus |ot

C hours, If ‘we take the mid-point of this_ period es the start-<
22 exposure we find the exposure is’ about 70 R. - Tnis;. however, -

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the whole body Gamm radiation from residual detris ™ ne

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Ve have ade a’ nurter of discreet ‘inguiries in the hep
t phot ograpnie film might heve teen’ évallaeble &Eboard the ship
might possi bly be used as a Gosinster. All efforts to czte

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st 11 on the ship when ‘the first measurements were nade, Thene
c uel dose could have been 2, 10, or even 100 tines higher’ espana me
on how much “ash Was washed off the ship and av wna tine, .
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There was” an ‘urgent’‘requirexent to_evaluate theextent’to! Poet

which fission’ products had beenabsorbed. into the tissuesof.‘they.roe
fishernen; As mentioned ‘eaériter, Dr, Nakaidzumi hadconcluded:3\'»ne
from his’ ‘mouse.~experinent vnat the’ prognosis for “the.“fisherren Kas”

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adversely affected by theprobability of excessive deposition.‘of.
ae
long-lived bone --seeking isotopes, The Japanese sclentists.were+*mete
desperately.looking. for an egent. to”-nobilize these Asotopes"andy
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