(“

(oi

Zonas

-

.

goes up.

~13-

The integrated local-fal1-out accounted for 50-60% of the

fission products,

Induced sodium activity was only a few percent of

the total,

At 2:45 p.m. Gen, Fields and Col. Huston left the meeting.
Dr. Scoville emphasized the lack of very high contamination
close in with the big shots,
since the Eniweto

However, there are large uncertainties,

shets are not truly representative of dry land

|gave a bigger close-in contamination than did
the high yield shots.

Dr. McMillan said that it would be very in-

portant to fire a high yield shot on dry land.

Dr. Scoville agreed,

He said the:central question is how to evaluate near misses on runways.
a eee

It is not known how the contamination scales close to the crater.

;

_There was some discussion ‘of the protection afforded by foxholes,
“einer

aeene

Onetmeasurement indicated that a man in a foxhole would get 10% of

the doee he would have received without this protection.
‘Integrated doses to H + 50 hours, based on CASTLE data, were
given as follows.

2500 r over U,00 square miles (largest dose you
get anywhere)

1000 r "

3400

2"

1"

nN

5L00

tw

Hi

20r

8500

"

tt

13000

"

"

500 r

100 r

®"

These results lead to two conclusions which are very important from
the standpoint of civil defense:

(1) one should take cover during

‘ae

rs ppouvs
+

nl

:of Energy
aaaS109

-<

16

Select target paragraph3