tye dei i
PaatEee dete Tap
meth
ar
A fallout-recording device had been left by a representati
of the
fealth and Safety Laboratory (HASL) of the AEC, New York Operatfions Office,
WO was concerned with recording offsite fallout.
The device
orated to record the low levels of radiation expected at offsi
s calilocations.
s°S maximum reading was 0.100 R/hr and the HASL representative
fhad warned
the Rongerik personnel to contact him if the meter reading went]
"off-scale"
(i.e.,
Blevice).
if the radiation exceeded the measuring capacity of the
Such a message was sent at 1515,
munications Service
was received at the Airways anf
Air Com-
(AACS) Center at Enewetak at 1543, and delifbered to
the Army Communications Center at Enewetak at 1547 for retransmlttal to Hq
JTF 7.
Records do not show if this message was retransmitted of
not but,
at any rate, the command levels were unaware of the extent of the fallout
tn Re i Let
at Rongerik
(Reference 83).
The personnel at Rongerik continued normal activities during
mainder of the day.
the re-
Most changed from the usual tropical short]sleeves
and shorts to long sleeves and long pants.
to a depth of 1/4 to 1/2 inch
The fallout materia
(0.6 to 1.2 cm)
deep in places an
visible layer on tables in the mess hall and barracks
(Referenc
gathered
left a
68).
SG Sei et
Those at Rongerik made some simple scientific observations
fallout.
They observed it under a microscope, and they also no
made a cathode ray tube glow (Reference 68).
Meanwhile, at those fleet units arrayed in a sector bounded
and 155° bearings from ground zero at ranges from 20 to 70 nmi
km), a second fallout began about 1300 and continued into the e
reached maximum at 1800 and had ceased by 2400.
This fallout a
be composed of much smaller particles that had taken considerab
longer
to fall from the great heights to which they had been carried thin the
large particles from the morning fallout.
turned on.
Again washdown syste
were
A TG 7.1 radsafe representative on the Bairoko advispd that
all nonessential personnel remain below decks to minimize the popsibility
of inhaling the small particles
(Reference 79).
217