.: a
(
ENC TO LR. pUGHER
such excuse mecGe for the winds cver Sikini 4toll, It seems to me that the
excessive contarination of Bikini itself could heve been evoided had the
simple fallout plot been more clearly understood during the first shot of
CaSTLE. Upon post analysis, efter all of the date was gathered and evaluated, I tried to determine from the fallout plots just what wes the dose
receiveé by the Rongelep natives. I em
48 hour dose of the Rongelep natives is
should te given to the possibility that
300 rcentsens or hicher within 48 hours
amezed to find that the integrated
over 300 roentgens. Some thought.
many of the natives did receive
and yet they did not show severe
sycrtoxs of radiation sickness, and to date there have been no reported
cesusities, I wonder if this is an error in my indirect meesurecents of
integreted dose, or whether our concepts of the sickness or the medien
lethal ¢ose must be revised.
LZ.
The excessive fallout from CASTLE Bravo shot indicates to me that,
E
if enything, the SUNSHINE estinates of the Strontium 90 uptake by human
beings is not exaggerated. Actually SUNSHibE may have underestizated the
uptexe ty a factor of 2. This is true, unless Chicago had excessive fallout,
I heve written a memo to Pr, Libby.on this subject. 4 copy of this memo is
inclesed for your reference. Dr, Dudley and Pr. “estern of your Division
héve indicated to me that the upteke of Sr90 by the Chicago babies reported
in derucry 1954 mesy have been due to fallout of fission products on plents,
This contesinetion adhered to the plents externally. Subsequently, cons
G
oe
ingested
tne plents and thus received the £r90 directly.
Cow milk, cheese
and neat +v then passed this on to the mothers, Even if this is true, it does
not alter the fact that with a totel aveilable debris of 1.5 to 0.75 iiT of
fiesicn products, the Chicago babies shored
products
5.
by SUNSHINE
e equivalent of 4 «T of fission
estimates,
I will continue to study and analyze the fallout primarily to essess
its silitery implications both from the cGefensive and offensive points of
view.
However, this problem of immediate fellout also appears to be tied
intizately to the world-wide contasination problem.
6, This docunent classified ee... accordance with paragraphs
23d and 56, AFR 205-1,
E
1 =nel
“ero to Dr. Libby
K USA
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ilNe. ci, LULEJIAL Jjit Col, USAF
atomic Operetions Division
2
C4~25582