a
COLDAR:
(contimed )
exposure or not.
> 4
Suppone zou have & high expomure bere Jar
_ @ few months then it drops down, you might aiss the high
exposure entirely.
LIBBY:
Ch, of course, ch, certainly,
MITCHELL!
Cne assusption a ict of pecple have been making ani that
that at the peak of fallout, that tine is important te
it might nct be, in cther words, ve don't know how long
takes for that material to travel thru the cycle befcre
fimally gets inte the huaan, That apparently is stil2
unknown,
In fact, it conceivadle that {t night be
up in certain places and not be getting to the human at
until it reaches a certain threshhold and then it might
over in something like fertiliser cr sonathing like that,
Those are just part of the unknowns that exist in this
Mainly, one other thing that we did was to take the
that the average American man going through life will as-| .
cumlate this 7/10 of a gram of strontium. We tried te
calculate vhat the ratic of radicactive strontiun to
strontius would have to be to icing a person to the to
level cover the ccurse of his lifetine of growth, We tock
the tolerance level as being one ulercouries or 6.22109
micrograns which is given by the Intermtional Comission |
on Radiological Protection, anid we assuned the average
depositicn of 1/10 of a milligres ani that works cut to
fact that you would meed a hundred ailiion to cne as the
Deas
olan,
1B