Project Ne.
Report No.
Date
EXPERIMENTAL PLAN
lS
12 Sep S
a
L.
Sher aebbieiwns Y
The DAVY CROCKETT weapon system was assembled to meet a specific
tactical requirement ~- that of putting into the hands of the front line
soldier a weapon that would reduce strong points which from past
experience had not proven vulneratile to HE and at the same time would
not deny extensive ground ereas to our own troops. It was felt that
these areas could be reduced by using radiation as the principle lethal
een aiee te ke A me
factor. With the development..of the weapon system it became a necessity
to evaluate from the user's standpoint:
1. Can the weapon do what it is expected te do - deliver a
lethal dese of radiation inside a protected environment, and
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Is there safety for the "user" within the system?
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Objectives *
Previeus field experimentation has developed the fact it is difficult
te extrapolate frem a physical measurement to a predicted bielegical
response, particularly in a large animal, without considerable experience
in correlation of these responses. It was therefore elected to evaluate
this particular weapon system using biological specimens, and specifically
te:
a.
Determine the immediate lethality response of swine in pretected
b.
To obtain a relative biological effectiveness (RBE) fer weapons
(frem blast and thermal) environment.
(Sub-project 4.2.1)
neutrons through determinatien of the mid-lethal dose of fifty percent
ef the animals exposed after thirty days (LD 69/39) in a biolegical
specimen from both ganma and neutrons and gamma and fractionated neutrons.
(Sub-projects 4.2.2 and 4.2.3)
c.
Bonus radiation measurements are to be carried out; specifically:
-le
Induced activity in Nevada soil, and
‘2.
Chemical dosimeter calibration.
_(Sub=project 4.2. (Pregram 2))
B.
Background and theory
What is the immediate lethal dose for man? Most individuals refer to
this dese synenomously with the immediate incapacitating dese fer man.
in a bielegical experiment, using large animals, this immediate incapaci-~
tating dose is extremely difficult to attain in the laboratory and is
reported en by very few workers -- none of whom have used the swine as the
_ experimental animal, In addition, any information en clinical incapacitation in a large animal would be very difficult, if net impossible, to
extrapolate te man. Because of this we have selected the immediate lethal J7