inconclusive,
although "bone development studies seem to indicate a slight
degree of retardation in the exposed group."
(p.
18)
The report discounted
the possibility that such retardation was due to internal absorption of
isotopes,
or due to external beta activity.
What seemed most likely was
that
since the children were smaller and thinner than adults, they received higher
amounts of penetrating radiation than adults and that
this, while not enough
to affect the bone itself, may have affected some hormune~producing gland,
such as the thyroid, which then affected prowth.
These tentative findings were
further complicated as noted in the four year report which stated that a slight
lag in development of some children was being reevaluated since there was
'
‘uncertainty in the ages of some of the children.’ !
(p. 28)
The five and six
year report indicated continuing difficulty in trying to determine the exact
ages of some of
the children.
Despite this "It was noted,
however,
that
in the
6-vear chonological age group three boys and one girl out of five boys and two
girls exposed to radiation we.. markedly retarded in skeletal maturation."
(p.
20)
This report concluded
"Ie might be speculated from these limited observations that these
children were exfesdd#to radiation at a particularly vulnerable age
and that the resulting retardation in osseous development led to
failure in statural growth.
On the other hand, it is not possible
to exclude completely the possibility that some process unrelated to
radiation damage was responsible for the retardation in skeletal
development."
(p. 23)
This hesitancy to ascribe growth retardation to the effects of radiation
may have stemmed from early newspaper reports which indicated that the people
had been severely stunted by their exposure.
This was
indicated
in the 1957
congressional hearings on fallout by Dr. Cronkite who had participated in the
first survey and who is a senior member of the BNL staff today.
lll
OWN 118: