wa
H # 8 hours for the YAG+40.
The highest activity level observed was
approximately 230 mr/hr at about H # 164 hours on the deck of the
YAG-40.
This portion of the deck was not washed dom, however, it is
believed that a maximum activity level of about 350 mr/hr at H # 9 hours
would have been measured on the deck of the LST-6]1 had it not been
washed down,
Readings between different instruments on the same ship
were in general consistent and overall documentation of the event at
each of the three ship locations was good,
Samples were obtained in the
shielded laboratory aboard the YAG-.0 by means of the Special Incremental
Collector and were analyzed from early times as planned.
Activity meas-=
urements, decays, gamma spectra measurements and physical observation
were performed,
For the most part these data are currently being reduced
and will be reported when available; with regard to physical observations,
however, it appears that the great majority of the fallout arrived in
Slurry droplet form.
These droplets averaged between 100 and 200 microns
in diameter and possessed an NaCl content ordinarily in excess of 80 per-
cent.
Preliminary analyses indicate the primary activity to be associated
with even smaller particulate contained in these droplets.
As before,
the wind structure in the region varied considerably during the fallout
period, causing the final fallout pattern to be much distorted from its
predicted shape.
The data obtained are being examined further and additional analyses
are being performed at NRDL; these results will be included in the Prelin-
iY
ane
.
as
inary Report.