0018933
27, 28), TUMBLER-SNAPPER (References 27, 14}, UPSHOT-KNOTHOLE
(References 16, 27), CASTLE (Reference 29, 30, 31, 32, 33}, WIGWAM
.
ves
(Reference 34), ‘TEAPOT (Reference 35), and REDWING (References 23,
3€}.
A summary of values computed from gamma contours and/or area
sampling covered a range from 0.2 to 0,6 (Refereaces 25, 26},
Re-
examination.of the prelimizzry REDWING datz by Tucker {Reference 37)
gave higher figures in the range 0,65-0,70 for barge {water surface) shots
znd up to 0,85 for land surface shots,
Results by the UCRL cloud sempling method ere 2lg0 available
from REDWING (Reference 26) for the ground shots Lacrosze, Mohawk,
Zuni and Tewa (part land, part water), for tke water surfice shots Huron
and Nzvajo and the high altitude air burst, Cherokee.
In the first three -
events the ratio of sclid-to-gas fissions was 28 low as 0.04,
Valves for
Tewa were not much less than one but this was probably due to the low
sampling altitudes relztive to cloud height,
were greater then 0,6 in all cases,
The ratics for the barge shots
For Shot Cherokee the only sample taken from the
main body of the cloud gave .2 ratio-of one, from the assuaption that the ratio at
early times in all cases is one, interpretation of these figures in térms°of
f2Llout distribution indicates that 90-95% of the activity came devm locally
for the land shots, 15-50% for the water shots,and ezsentially none for the
highzltitude air burst,
On 5-7 March 1957 2 sympcsium was held at the Rind Corporation