lives on Rongelap Island.
The people obtain most of their food from Rongelap
with occasional supplemental trips to Eniaetok and to other southern islands
in the atoll.
Little or no activities currently takes place on Naen or Kabelle,
or other islands in the north.
Figure 2 is a graphic presentation of the measurement points and exposure
rates along the main road of Rongelap Island.
uniform averaging 7.3 uR/hr over the island.
The exposure rate is fairly
-
This is about twice the background
radiation level of uncontaminated atolls in the Marshall Islands,
Tables 7, 8 and 9 present the data for the islands surveyed in the Utirik
Atoll.
These islands, Aon, Eorukku and Utirik, represent the major islands within
the atoll.
Aon, located in the southwest corner and Utirik located in the south-
east corner of the atoll, are the major areas for living and food production.
external exposure rate
The
for all these islands is about 4 uR/hr, i.e., very near
the regional background level.
Tables 10, 11, 12 and 13 present the RSS-111 survey results for Wormej and
Wotje Islands of Wotje Atoll and for Bigen and Ailuk Islands of Ailuk Atoll.
These
islands were surveyed to determine whether they were representative of baseline
external exposure rates for the Marshall Islands.
The individual island averages
are found in Table 14, but range from 3.7 »R/hr to 3.9 uR/hr.
These exposure rates
are about the same as that for Kwajalein and other areas not exposed to gross contamination from fallout; we assumed them to be representative of ambient background
radiation levels for the region.
Discussion of Results
The average exposure rate
as measured for each island is listed in Table 14.
In all areas, except for Rongelap Atoll
and Rongerik Atoll where only Eniwetak
Island was visited, there is essentially an uniform exposure rate within the islands
of a given atoll.
For hypothetical inhabitants of Eniwetak Island at Rongerik Atoll,