OPERATION REDWING -
DATE:
TIME:
PPG Tine
3 Jul 1956
O606
Mohawk
GMT
2 Jul 1956
Sponsor:
1806
SITE:
UCRL
PPG - Eniwetok - Ruby
11°
162°
30’)
18'
Site elevation:
HEIGIT OF BURST:
=—-38"
39"
oN
E
Sea level
300 ft
TYPE OF BURST AND PLACEMENT :
Tower burst over coral soil
CLOUD TOP HEIGHT:
CLOUD BOTTOM HETGUr:
65,000 ft MSL
42,000 ft MSL
REMARKS:
The dose-rate readings on the islands of the atoll were
takenby aerial and ground surveys of scientific projects between H+9
hours and H+56 hours.
The experimentally determined gamma field decay
exponent
as used to extrapolate the dose rate readings to
H+1 hour.
Extremely heavy locai contamination resulted on Ruby.
In
addition, signivicant amounts of contamination were deposited on the
northern islands of the atoll. The readings taken between sites, Janet
and Olive, were corrected for the small dose rates observed there before
the shot.
No such corrections were applied to sites, Pearl and Sally,
because the contamination from shot Mohawk was so heavy that the preshot dose rates could be neglected.
The readings in the vicinity of
the crater were taken between H+32 hours and H+56 hours.
The average
field decay exponent
was used to extrapolate the readings
to H+l hour. Approximately 2 hours after detonation, light fallout
started ori Elmer and continued for one hour.
Peak intensity was 22 mr/hr.
158