of its 1370, content relative to the naturally occurring 404

If the 137 og

in soil is less than 5.2 pCi/gm, for example, the 1376, content of the copr
produced may be less thar its 40, content, and one might argue that its mar
ability should be unaffected.

Table 10 shows the mean 13766 soil concentra

and soil removal actions that may reduce the 13765 cencentration in copra t
values equal to and twice that of the natural 40, for all northern 3s lands
(average profile data for PEARL, ALICE, BELLE, and CLARA, plotted in Figs.
8-11 and included in Table 3, were used in the calculations for each of the
islands).

On JANET, for example, the commercial agriculture area in its current
condition should yield copra with an averaze 137 66 8; concentration ratio
about three.

Removal of a 6 em thick leyer cf soil may reduce this value

to two, and removal of 14 cm may result in copra with equal concentrations
of

137

Cs and

40

kK.

.
Note that for islands nlanned to be used for commercial

agriculture, it is possible that only JAULT and PEARL have 137 C6 soil valu
high enough to yield copra with a 1376, 40. ratio preater than 2.

Test

plantings of coconut would be needed in areas where removal of scil has
been conducted and the level of

137

.

Cs in coconut meat analyzed before any

committment is made for planting of coconut trees in commercial quantities
With additional study it may be possible te predict with confidence che
level of

137

Cs in coconut meat through analysis of stems and leaves of

immature trees.

This would save time.

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