Table 3.
Mean #37Cs and 9°Sr Concentration in Aerokoj Coconuts
(pCi/g wet weight)
Sample
137Cs
30Sr
Meat
2.6
0.009
Milk
3.0
SUGAR (LELE) AND TARE (ENEMAN)
For all practical purposes these are one island, although marked
differences in background levels are seen between the east and west
ends (Figure 5).
Several nuclear detonations occurred on the west end of Eneman which
as a result is only about half its original size.
Soil samples were taken at four locations on Eneman where measured
backgrounds were 60, 100, 250, and 500 wR/hr respectively.
Each
sample represented approximately one square foot to a depth of one to
two inches.
Three main contributors to the gamma exposure rate were
identified:
©Co, 137¢s5, and }92mRh.
Although the '°2"Rh component of
the gamma spectrum probably contained some '®®Ru-Rh, the concentrations
were calculated assuming only !°2"Rh to be present.
A wide variation
in the relative amount of !37Cs was seen, but in general the amounts
varied inversely with the background exposure rates.
Figure € shows
the projected decay of the sample taken in the 500 wR/hr background area.
The relative amounts of each nuclide are indicated at T (July 19°69).
Figure 7 gives the projected exposure rate as a function of time.
Two
of the samples were also analyzed by radiochemical methods for alpha
emitting nuclides (Table 4).
14