TAB A
MOHAWK EVENT
OPERATION REOWING
‘1.
MOHAWK was detonated
on EBERIRU Island
(RUBY) of ENIWETOK Atoll at O606M, 3 July 1956. The mushroom portion
of the cloud disappeared through a 6,500-foct overcast.
The stem.
portion remaining below the overcast moved to the west.
2.
<A broken cloud condition with bases at approximately 1, 800
Pty
eet made it necessary to recover the participating aircraft by GCA,
tims preventing an early lagoon and etoll survey by the P2vV aircraft.
The P2V arrived on station over JAPTAN Island at O7\5i{ and set up a
barrier monitoring pattern on 260° and 080°, 20 miles west.and 5 miles
east of JAPTAN.
Nothing above background was reported and reentry
hour was set at O800M,
3.
‘The observed winds at OSO0H indicated a wind shift through the
north at the 15,000 to 20,000 foot level. This feature was not forecast
in the magnitude which it appeared.
Intermittent showers throughout the
morning brought a peak fallout of 16 mr/nr at O900M on PARRY Island.
This computed out to a total dose for the remainder of the operation of
apnroxinately 100 millircentgens.
lh.
The fallout forecast was based on a
burst with a maccimum
yield of
S.
H+3 days.
Outlying stations reported no increase in background through