fallout was at maximum from about 0.25 to 0.53 R for personnel continuously at Enewetak
from 4 November to 3] December, but only if the effects of weathering on the deposited
fallout and shielding by working and living quarters are ignored.
Actual exposures were
probably much lower.

Nearly 90 percent of the recorded IVY exposures
exposures are summarized in the following table.

were

tess

than

1 roentgen.

The

IVY, Joint Task Force 132 Personnel Exposures

No. of
Persons
Badged

Exposure Ranges (roentgens)
0

0.007-0.999

1.000-2.999

Over
3

High
Recorded

Total Army
% of Total

164

39
24

98
60

26
16

]
<]

3.3

Total Navy
% of Total

810

244
30

526
65

39
5

]
<1

3.1

Total Air Force
% of Total

675

78
12

541
80

34
5

22
3

17.6

14

2
14

4
29

8
57

0)
0

2.8

367

45
12

245
67

74
20

3
<1

3.2

2,030

408
20

1,414
70

18]
9

2/7
<]

17.6

Total Marine Corps
% of Total
Total Other Gov't
4 of Total
Total
% of Total

+

+

*

£

£

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From 1945 to 1962 the United States conducted several series of underwater,

*

conduct a program to identify DoD participants, determine radiation doses,
and write histories of the series.
This fact sheet summarizes information
on OPERATION IVY, one of those test series.
Further information can be
obtained from DNA Report #6036F.

*
*
*
*

surface, and above-surface nuclear tests. The Defense Nuclear Agency (DNA)
in 1978 was assigned as Department of Defense's (DoD) Executive Agent to

*
*

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Select target paragraph3