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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