F. McCraw
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AOE 7O
Nov § 1965
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Tommy F. McCraw, Physicist
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BMuclear Explosives Enviromental Safety Branch, OS
SUMMARY OF DETECTION OF THYROID NODULES IN MARSHALESE NATIVES FOR
MARCH 1, 1954
OS: NEES :TIM
Heavily Exposed Group - Rongelap
175 rads whole body dose.
Thyroid dose from +32 - 150 rads by urine analysis, adults
100 rads by analysis of animal and human urine
160 rads recent recalculation for adults
700-1500 rads estimated for 2-4 year olds.
1963 (9th year) - Small nodule first detected in one girl.
1964 (lOth year) - Detected nodules in two more girls for a total of
three.
Two were age 13 and one 14.
Operated on all
three. Nodules not malignant. Two doing well on
thyroid replacement therapy. One showed signs of
hypoperathyroidiam, developed rheumatic fever, re-
sponded well to therapy.
with 29 children.
The total population was 64
April 1, 1965 (11th year) - Detected three mare cases; one boy 12, one
boy 17, one woman 41.
Operated on all three.
There was then a total of six cases with 9%
incidence for the total population and 17%
ineidence for children leas than 135 at time
of exposure.
October 6, 1965 (letter
from Conard to Goding) - Detected five additional cases among Rongelap
and Ebeye people. Detected five other cases
where thyroid felt roughened. Found two cases
of retarded growth in boys caused by hypothyroid state.
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