C.W. Mays - ‘age 5
reliable estimates (see page 561, ref. 5) for these
average yearly exposures were 6.3 rads for 1953 (from
the fission yield) and 1.6 or 5.9 rads for 1952 (from
the fission yield or air beta activity, respectively).
For 1955 and 1951, I only have my estimates of 2.0
and 0.4 rads from the fission yields of 84 and 18 kilotons
during the growing season (see page 561, ref.5).
Comparing my approximate fission yield estimates of dose
with more reliable methods suggests that the fission
estimates averaged over a year of testing might be
accurate within a factor of ten.
Therefore,
I have
assigned dose ranges of 0.2-20 rads for 1955 and 0.04-4
rads for 1951. “It is not my intent to deceive the
reader into believing that the true doses are well
established for the years 1955, 1953, 1952 and 1951.
More work is needed. My best estimates of the average yearly thyroid
doses for Utah infants are summarized in Table 1 for
each year of Nevada testing.
Individual doses were,
of
course, much higher; Knapp estimated doses of 120-440
rads for infants in st.
George, Utah,
"Harry" shot of 19 May 1953.°
following the
The dose for our highest
station in 1962 was 9-26 times greater than our average.”
Table 1
ESTIMATED aVIRAGE THYROID DOSES TO ALL UTAH INFaNTS
Yiar
OF
TLSTING
1962
DOot IN RaDs
LOWER
HIGHER
LIMIT
0.63
LIMIT
-
0.77
MNLTHOD OF DOsE
fsTIMaATION
S,L.MILK POOL & PENDLETON'S
MILK sTa.
1958
QO.2
USFHS SaLT LAKE MILK POOL
1957
1.3
USFHS o.LT LAKE MILK FOOL
1955
Oe
-
20
rTsoalOi, YIELD
1953
2
-
le
PILLD EBLTa ACTIVITY AFTLE
1952
3
-
18
FIELD BLTA ACTIVITY AFTER
eHOT "EASY"
1951
0.04
-
4
SHOT "NANCY"
FIoacIOh YIELD
DOE ARCHIVES
¢/