NEVADA
OFFSITE
RADIATION
LEVELS
the Nevada Test Site should
be as follows:
a.
(continued }
The current criterion
of 3.9 roentgens for
any one year; plus an
additional restriction
of
bh.
10 roentgens in a period of 10 years,
with the first of the successive tenyear periods starting in the spring
of 1951.
These should be construed to be operationa: guides
rather than maximum permissibie jimits, since
exposures somewhat in excess would not be hazardous.
The above summary is approved in view of the Committee's
opinion as to the necessity for continued weapons
tests.
The resolution was passed unanimously by the Committee.
DR. FALLLA ther introduced the subject of Project Sunshine.
He
revievel particularly the work done to date,
the reports by
Ir. Libby and Mr. Eisenbud.
He also reviewed
the basis on which the maximum permissible body
PROJECT
SUNSHINE
burden of Strontium 90 was established. Dr. Libby
Aas suggested an estimated ultimate burden of
from 4 to 1Ogdgecuries Sr-9O per garam of Calcium .
as the average for the U. S. and tr. Eisenbud has
suggested 25 as the average for North Dakota in
wrich the fallout has been higher than for the rest of
tne UU. &..
An extensive discussion followed in
term: of tne upteke and distribution of Strontium 90 in different
parta of the world and its relationship with the known effects of
radium in the body.
DR. FAILLA
pointed out that the values
suggested by Dr. Libby and Mr. Eisenbud appeared to be in reasonably
good agreement and were based upon the best information available
to date.
There was much evidence to indicate that the accepted
maximum permissible body burden might be too conservative. He did,
however, point outthat the Commission was under obligation to use
the nationally accepted limit.
It would, however, not be wise for
the-Commission to suggest a revision of the limit, since its motive
i
6
ped
mM
might be questioned.