TAB A
MOHAWK EVENT
'
OPERATION REDWING
1.
MOHAWK was detonated on a 300-foot tower on EBERIRU Island
(RUBY) of ENTWETOK Atoll at 060M, 3 July 1956,
The mushroom portion
of the cloud disappeared through ea 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
feet made it necessary to recover the participating aircraft by GCA,
thus preventing an early lagoon and atoll survey by the P2V aircraft.
The P2V arrived on station over JAPTAN Island at O7L5{ 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 O8004.
3.
The observed winds at O500M 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/hr at O900H on PARRY Island.
This computed out to a totel dose for the remainder of the operation of
aporoximately 100 millircentgens.
—
l.
The fallout forecestwas based on a tower buret with a maximm
BES? 5s
ng
:
S.
a
a
Outlying stations reported no increase in background through
B+3 days.
{rhs Docuienal UUNSISTS ee
!
a
“SL, £o Capit5, SERS
A