-5-
biological samples.
A successful landing was made at Rongelap
Island wherethe objective was accomplished.
An accident to the
anchoring mechanism of the plane, however, prevented completion
of the sampling at Kabelle Island.
Robert Rinehart and Paul
Zigman of U.S.N.R.D.L. accompanied Lauren R. Donaldson, Jared
Davis, Edward Held and Paul Olson on this trip.
The most extensive survey and biological collecting trip
vas conducted at Rongelap Atoll from January 25 to January 30,
1955.
This survey was made in conjunction with U.S.N.R.D.L.,
vith the U.S. Navy furnishing the 0G vessel "Rio Grande" for
transportation and support facilities.
Allyn H. Seymour and
Frank Lowman, Program 19.1, shared the responsibility for the
biological sampling.
Readings were again made with the survey
meter on almost sll of the islands visited.
The readings were
taken at a height of three feet unless otherwise noted.
Radiation Levels Rongelap Atoll
January 25-30, 1955 - mr/hr
Rongelap Island
Eniaetok Island
-
Busch Island
ng
Labaredj Island
1
~“Kabelle Island
Lomuilal Island
_ Gejen Island
Lukuen Island
0.5
2.9
1.5
2.5
3.0
5.0 at ground level
8.0
7.0
4.0
Beda.
The collections at Rongelap Atoll during this period of
a
study provided material for 1499 samples which have been processed, the radioactive content determined and the results tabu-
lated and evaluated.
:
UNIVER
UN.