rl
varying thickness of aluminium absorbers.
The "shallow doses"
po
7" /4 so
calculated for Enjebi (Janet) Island are approximately 1.] rem in 30 y
and for the southern islands the dose is 0.0l/rem in 30 y.
This
"shallow dose" is received primarily by the surface layers of skin (1 cm
deep); deep doses from the external beta to organs such as gonads, bone
and basal cells in the skin are less than 1] mrem in 30 y.
The shallow
dose contribution from the beta emitters cannot be summed with the bone
and wholebody doses presented in this paper; if surface skin doses were
to be considered independently then the "shallow dose" from the beta
emitters should be included.
Because the beta particles have a short
and defined range any absorbing materials present, such as gravel
buildings or clothing, will greatly reduce the externel dose from beta
emitters.
Inhalation Calculations
Respirable 293+240p. ang 24lan are calculated using data
developed in resuspension experiments conéucted at Enewetak Atoll in
February 1977 and Bikini Atoli
in May 1978.
A brief description of the
methodology is given here but more detail and discussion can be found in
"a paper currently in press.°
The study conducted on Bikini Island in May 1978 provided a more
complete set of data,
following our preliminary studies on Enjebi
(Janet) Island of Enewetak Atoll in February 1977.
were conducted on Eneu Isiand of Bikini Atoll.)
utilized extensive soil
(Subsequent studies
The Bikini Island study
sampling and in situ ganma spectroscopy to
determine isotope levels in soil and vegetation, various air sampling
I011b491
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