- 34-
the deeper waters of the lagoon.
Fresh and brackish water algae were col-
lected from a well and from a concrete cistern found near the village on
4
Rongelap Island.
Samples of two species of algae, Halimeda and Caulerpa,
were taken from all islands visited and other species were taken whenever
found.
Samples of marine sand were taken near the algae collecting loca-
tions,
The radioactivity found in the algae for the first five collections is presented in detail in Appendix Table VII of UWFL-42.
collections is given in Table 10 of this report.
A summaryof all the
The radioactivity found in
the algae collected in October 1955 is presented in Appendix E and is summarized with the marine sand in the following table.
Summary of the Radioactivity in the Algae and in the Lagoon Sand
Collected in October 1955.
Values Expressed in uc/kg of Wet
Tissue,
,
Rongelap Atoll
Kabelle Labaredj
Algae 0.18 0.31
Sand
2.6
--
Ratio 15
Soil
Algae
a=
Shore
Rongelap
22!
0.089 0.066
0.084 0.34
1.
5.1
49!
Well
0.048 0.50
0.23 3.3."
48
6.6
Cistern
6.8
--
--
Ailinginae Atoll
]
F
Bs
7
_
Enibuk
__.__Shore 35!
0.033 0.064
Algae
0.039 °. 13
Sand
Ratio
1.2
.
NERS
UNIV. OF T0
* At bottom of lagoon in 22 feet of water; ** island soil.