dl
Dr. Harley had obtained in Nerwey ind) tated that’ practically all
of the activity was about civ vonths
°d,
>
Burther,
that the
&
radiostrontium content of the semples was estimated to be
approximately 1/100th of maximum permissible level for drinking
vater (U, S, Bureau of Standards Hand’: ook 52),
In other words,
that water from the melted snow did not contain a harmful emount
of radioactivity and that the water supply in Oslo contained only
1/50th of that amount of radioactivity whith was present in the
melted snow water,
.
:
Since direct Strontium-90 analysis inherently requires time,
due to the necessity for allowing the isotope to decay, it was
not until the latter part of June that more definitive data could
be obtained,
It has now been found that the radiostrontium
content of the most active snow sample
is 1/300th of the maximum
permissible level for industrial exposure and 1/30th of that
recommended for the population as a whole,
‘
On June 20, 1956, Dr, Charles Dunham, Director of the
Division of Biology and Medicine, Atomic Energy Commission,
and "
Dr, John Harley arrived in Oslo to discuss the findings of the
EL I eR
'
+
AEC reportwiththe NorwegianDefenseEstablishment. .
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on
:
L.
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