SESSION IV
DISCUSSION
INDIVIDUAL-PAPER DISCUSSION
Discussions that took place following the presentation of individual
papers are given in this section. These discussions preceded the
scheduled general discussions for the session.
HERDE: Dr. Martin, in your slide showing theoretical buildup of
131] in milk and in human thyroids, you also showed an extrapolated
value for the ‘I in the environs, i.e., in the atmosphere and on the
foliage being eaten by animals. That line went straight to the zero-time
ordinate. I wonder if you should have taken into consideration the
buildup of "I that is not present immediately, which results from decay of Sn, 4Sb, and *!Te in this case. Iam not sure that it would
change the model or the formula, but certainly the slide could show the
buildup of '3'] in fallout as well as in the thyroid and in the milk.
MARTIN: No data were obtained to show the theoretical buildup of
1311 on plants. Instead, an arbitrary value for the concentration on plants
at time zero was obtained by extrapolation from determinations made
on D+5 and D+ 10. In this case time zero is approximately H + 12 hr,
which would correspond roughly to the real levels of '°J buildup from
fission-product precursors.
HERDE: In 1955 I made thyroid measurements of native rabbits
killed during the first evening after detonations and found four or five
times as much ‘J as 4], I wondered whether you thought it worth-
while to assay for these shorter-lived nuclides. The challenge is en-
hanced by evidence of the presence also of '*I. I have hoped that
someone would start where my 1955 work for UCLAleft off and extend
it to demonstrate the significance of those shorter-lived isotopes of
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