67
In the fallout we found 2/10ths
of a microcurle, total fallout that is ine
tegrated over the entire area that was
sampled in the first case 20 microacuries
and 50 microcuries in the last case.
We also measured the activity in
the alr at 25 feet away from the fire and
in no case was it above four disintegrations
per minute per cubic meter either of alpha or
of beta activity,
The maximum distance as we
dietributed the stuff and this is distance to
actual background megsurements with about a
thousand feet in the case of seven tons of
material.
To give you some idea of the appear~
ance of the experiment, I have a small chart
here that will show how it was done.
This
was & second exveriment and we had pretty
food wind predictions on this.
The atmos-
phere was pretty stable and therefore we set
our sampling array only at a 90 degree aro
awry from the burning,
The samples as you can see were set
out to about a thousand feet in this 90 degree
on relatively short arcs,
The entire fallout occurred within