Analysis by Area.

Table 14 1s a Summary of the activity

found in all the plants collecte
d at each station before and afte
r

the Mike shot.

Counts of all plant parts are incl
uded in the

averages.

Table 14 - RADIOACTIVITY OF LAND PLANTS BY
STATION

Thousands of d/m/g Wet Sample

|

Island

Mean

Japtan

n

PRE SHOT
Max.

Min.

0.014 14 0.074 Bg.

Igurin

0.28

Rigtil

0.56

Bogombogo
Engebl

Aomon-Rojoa

Runit —

0.12

0.83

0.28

22 3.7

Bg.

221.6

Beg.

301.3

Bg.

24 3.4

0.24

Bg.

17 8.6

POST SHOT

Mean

16.

100.

---

0.092

1900.

89.

—4O.

n

Max.

6

11

20

--

0.33

39.

820.

---

Min.
0.13

0.83

1.0

+--

6

4o00a

280.

2

60.

20.

12

370.

4.9

The greatest amount of activity was found at Engebi Island,

both before and after the Mike test.

Since landings were not

made at either Bogallua or Bogombogo after the shot, there were
no collections at these islands.

In general,

the activity levels

of the land plants were lower than those of the algae collected
at the same island, but the trend is

similar.

Plants from those

islands closest to and west of the shot island contained the
highest activity.

Most of the plants at Engebi and Rojoa as

well as some at Rigili were either burned or physically damaged
after Mike shot.

Comparison of counts of damaged and healthy

leaves from Rigili plants showed no marked differences between
the two,

indicating that most of the activity was on the surface

of the leaves.
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58

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