absorbed dosefrom iodine and tellurium nuclides
was 7.7 times greater than the absorbed dose
due to }*'I at Rongelap for an adult male. It was
10 times greater than the absorbed dose due to
‘817 at Sifo Island and 4.7 times the absorbed
dose due to ‘*'I at Utirik Island. James assumed

BRAVO fallout. Surface and airborne activity,
fallout granule size, and exposure rate at any
time after the detonation were developed for 142

nuclides at Rongelap and Utirik on the basis of
the reported nuclide composition on day 26 postdetonation. Over 70 documents were reviewed
for information regarding exposure-rate readings, film-badge readings, fallout composition,
dose and dose rate, body burdens, urine analyses, gastrointestinal tract contents, bone marrow and thyroid dose estimates, and activity

the total thyroid absorbed dose was 2.6 times

greater than the absorbed dose dueto 1317 3 The
factor 2.6 would be appropriatefor slightly older

fallout than that experienced at Rongelap,

Utirik, or Sifo Islands. Table 1 was based on
ingestion intake. Inhalation intake and absorption through skin could not be reconciled with
measurements of ‘”'I in urine or with external

measurements in soil, water, marine life, and

land animals. Results from the meteorology
study and archival soil study were also reexamined and compared to fallout composition
results.’
A tabulation of the estimates of thyroidabsorbed dose, age at exposure, and specific
nuclides is given as Table 1. The thyroid-

exposure rate measurements.

The average and maximumestimatesoftotal
thyroid-absorbed dose were tabulated in Table
2. Observations of the range of 7Cg body
burdens during protacted exposure’ and the

Table 2

Total Thyroid-Absorbed Dose Estimate
Average Estimate, rad*

Sifo Island

Rongelap Island

Age

Internal

External

Total

1000

190

1200

1600

190

Adult Male

Adult Female
14 Year Old
12 Year Old

1100
1400

190
190

Internal

External

1300
1600

280

290
410

110

110
110

Utirik Island
Total
400

Internal

External

Total
160

410
530

150

160
220

11

570

11
11

170
230

9 Year Old
6 Year Old

2000
2400

190
190

2200
2600

18006

450

110

110
110

660
760

240

300
340

11

11
11

310
350

1 Year Old
Newborn
In Utero, 3rd tri.

5000
250
680

190
190
190

5200
440
870

1300
—
_—

110
—
_—

1400
_
_—

670
48
98

11
il
11

680
59
110

In Utero, 2ndtri.

—

—_

—

540
640

490

110

610

260

11

200

270

Maximum Estimate, rad*
Aduit Male
Adult Female
14 Year Old
12 Year Old
9 Year Old
6 Year Old
1 Year Old

Newborm
In Utero, 3rd tri.
InUtero, 2nd tri.

4000
4400
5600
6400
8000
9600

190
190
190
190
190
190

4200
4600
5800
6600
8200
9800

1120
1160
1600
1800
2200
2600

110
110
110
110
110
110

1200
1300
1700
: 1900
2300
2700

600
640
880
960
1200
1400

11
11
11
11
11
11

610
650
890
970
1200
1400

20000

190

20000

5200

119

5300

2700

li

2700

1000
2700

190
190

1200
2900

—
—

_—
—

—
—

190
390

11
11

200
400

2000

110

2100

1000

1k

1000

—

—

—_

*Multiply by 0.01 to obtain gray.

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