Me
as
‘et
we,
hundred roentgens at a single exposur>,
totelly vecsouring on the J.Jlste 2
on fertility,
320)
+
The British report is
ational exposures
;
Chapter IV is a very lengthly genetics effects discussion
with many figures, tables and caléulations and a erltique of the
Atomie Bomb Casualty Commission genetics study in Japan,
This is
a highly technical discussion end ‘comes: out with the same
—
«
conclusions as does the National Roademy of Selences, namely that
a dose of radiation which would double the mutation rate of a
relatively small group of prospective parents would preduce no
“noticeable effects,
"For levels of radiation up to the doubling -
dose, and even some way beyond, the genetics effects of radiation
are only appreciable when reckoned over the population as a wnole
and need cause no alarm to the individual on his own account,"
Chapter V discusses natural radioactivity ~ radiation from
appurtenances of civilization and occupational exposure to
radiation,
The report concludes that diagnostic medical X-rays
produce exposures to the germ cells of the order of 22% that of
beckground and constitute the most important source of man made
irradiation,
It is estimated that the United Kingdom Atomic
- Energy Authority's employees receive an averege dose of O.4r
per year.
The estimated external radiation exposure to people in
Great Britain from fallout from all pect nuclear tests has been
quite minimal,
"___-tneluding all ordinary atomic bombs exploded
before December 1955, and calculating all the radioactivity which
they have concributed end will ccentrit te over the next 50 VPE"3,
it 4s found that the total dose which ¢ man, continuously ovt of
doors, night end day, would receive is *,005r.
f'rem crdinary
To this Gese
atcmic bombs must te aiadei the dcse of thermnere< sas
- 19 -
Enclcsure Tit