-1-
1NTRODUCTION
Operation
31arshall
was
Because
detonation
of an unexpected
of
Bravo,
the
direction,
Rongelap
and Rongerik
had an easterly
explosion.
evacuate
exhibited
children
suffered
after
about
in 1954 developed
was taken
The rate
of occurrence
ot this report
from which the natives
rainout
as part
history
of air concentrations
those
by U. S. Task
predicted
of fallout
Force
from the
personnel
on Rorgelap,
to
the closest”
and minor skin burns.
Rongelap
nodules
natives,
on their
who were
thyroid
natives
None
and surface
statistically.
air concentration
suite of codes to estimate
were evacuated.
of the debris clou~ crossed
islands
Finally,
Since
The
plots,
the doses at the
We will also consider
the atolls.”
on the downwind
glands.
young
has. been reported.
than would be expected
deposition
particle-in-cell
in the
following
persons on the atolls of
high levels
nodules among the Utirik
is to calculate
using a three-dimensional
of heading
nausea
resultant
from their exposure.
non-maligment
has been higher
test of the series
wind directions
Some of the natives
temporary
in the
[11
As a result,
to relatively
10 years,
of similar
time.
instead
alignment.
of these islands.
point,
then the occurrence
nuclides.
pattern,
any medium or long term effects
However,
islands
action
conducted
The top of the
in mid-tropospheric
were exposed
Prompt
the natives
to the detonation
fallout
series
explosive.
thermonuclear
shift
test
The most notorious
to nearly 35 km at stabilization
northeast
nuclear
[11
a 15 megaton
cloud reached
purpose
nuclear
was an atmospheric
Islands from March to May of 1954.
Bravo,
debris
Castle
the dose from
the calculated
will be presented
time
for several