=——
7. The measured air and water concentrations were all below
The highest air concentration reported
maximum permissible limits.
per cubic meter at Mesquite,
was 0.17 microcurles
pared with
the maximum permissible value
cubic meter,
tion
over 24 hours.
averaged
, 000087 microcuries
per cublie
of
Nevada, as comper
1 microcurie
The highest water concentracentimeter jin the Virginia
River Trrigation Canel, was well within safe
limits.
8. The only significant fall-out reported in distant parts
of the nation occurred
in the Troy Albany,
Concentration
three days after the
seventh detonation
New York, avea during heavy precipitation.
of radloactivity was 100-200 curles per square
mile, a dose rate
for 13 weeks.
of
1 milliroentgen per hour,
or
.375 roentgens
(End of SECRET section.)
9. Collection of fall-outdata (UNCLASSIFIED).
spring tests
for assembling,
collected by
were taken
special attention was given to procedures
evaluating, and
the vartous test monitoring groups.
to furnish this
officers and
state
Special
information promptly to public
officials
from erroneous public
delay.
Interpreting fall-out data
'
steps
health
so that possible questions arising
speculations could
be answered without
With the cooperation of the U. S. Weather Bureau,
trajectory maps were
prepared
main portion of fall-out
to record
from the detonations.
Health Service assisted in the
the health aspects of
the actual movement
The U.
Important work of
fall-out to the
pubite.
S.
of the
Public
interpreting
In addition
sctentists at ten Commisseton installations througnout the country
were designated as authoritative sources to whom local public
health officials could refer for fall-out information.
(End of
UNCLASSIFIED section.)
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Part VI
seers
current
During the