F,
The following data are reported for single particles collected during
Upshot-Knothole# and Tunbler-Snapper#*,
Dstt
aa
DistancetoonGround Za
sf,
—
2,000
45
200
130
1,426 x 92%
900
10
919
460
22
723
350
4.7
Tl
400
10.
555
149
1.7
387
250
4.7
23%
4?
14.7
one
115
5.2
95
al
3.0
U7
0.3
—
7
20
It is nob intended here to imply these are the naximm specifie
activities per particle that existed or could exist.
The data at 14.7
miles are reported te show the vide range of specifie activity that may
*WEe@11. "Distribution and Characteristics of Fallout at Distances Greater
than 10 Miles from Ground Zero, March and April 1953", Rainey, C.T., ot al.
(SECRET)
snd LA-1685.
#eUCLI-243. “Preliminary Study of Off-site Airborne Radioactive Materials,
Nevada Proving Greunds",
February 1953 (SECRET)
ang Li-1685.
#**Date from estimations boused on radiceutograph methods.
gtr
3 ye?
oy
4
b
Fad
occur at one locality,