Diaare

_—————

Tre highest empevst

of racioectivity in tne ares studiea

+ lagoon

is on the oceanyfloor in the region of CaSTLE falicin.

The

top of cne deep sea core taken 10 miles northwest or Bikini
Lagoon tested 29,500 cpm/gr..3 sediment from the northwest end

of the lagoon emitted 45,000 cpm/g.

Presumably both vere frea

BRAVO event at CASTIE.

the lagoon, the tottom

~

Elsewhere in

sediment generally emitted froz 1500 to 4eCO ern/z coupered
with a usual 1000 to 3000 cyn/g in tne fallout urea cutside
the lagoon.
Sampling of bottom livins crgsrnisms outside the Legocn is,

the highest activity end this was cuistandingly concentrated

in the livers and kidneys (52,060 to 84,000 gamma con /g
in the open sea area, rmensurements of currents verified

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The current

attains 0.6 to 0.7 lot speed and everages 0.3 to C.% knot;
thence it cecreases to a maximum of 0.3 knot and average of

C.15 knot at 500 meters depth.

Bikini to 1760 meters in the nerthwestern part of the trea.

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The thickness of the wind stirred leyer above the

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