oe
=
~
>
a
nd
We are considering now that we are
most interested in strontium,
That the total
mixed fission products is more or less second=
ary and since we now have trouble defining the
source of fission products activity that falls
out, we get the high yield weapon, the stuff
goes up and comes down over a period of years.
We used to be able to count on a
eeries being over in three months,
We had?
checked on our network; there was nothing to
Reasure, but after Castle, we are still measur-_
ing debris coming down from Castile.
The Ruselang come in with their
shots: so we cannot take their data, I mean
their fellout and calculate Just how much
strontium should be there,
8a we have gone
to the system of compositing. these fallout
samples on a monthly baeis for each station
and determining the actual strontium present.
If we do this for the vorld we can
see that since March of '54, which is the
Castle series, that we have a total mixed
fission of product which we still measure a
picture which varies -- this Castle just
happens to be a mean value we picked for thee
three months and we have results from ths
Russian series and from the Teapot series but
195