-10COMPOSITE DOSE ESTIMATES
Combining the results from air beta concentrations
kiloton yields
Table S.
(Table 3) and
(Table 4) the following dose estimates are presented in
Populations estimated from 1950 & 1960 U. S. Census and ret (7) ,
Table 5
SUMMARY OF DOSE ESTIMATES
YEAR
OF TEST
1951
1952
1953*
1955
1957
1958
1962
UTAH INFANTS
UNDER 2 YR
40 ,000
41,000
43,000
45,000
47,000
48 ,000
53,000
*St. George
700
EST. AV. TH. DOSE (RAD)
AIR BETA
YIELD
MEAN
?
5.9
?
?
8.6
1.4
1.0
68
0.4
1.6
6.3
2.0
8.6
1.4
?
-
0.4
3.8
6.3
2.0
8.6
1.4
1.0
68
Agreement between the 1957 dose estimates is a consequence of the way
the data was normalized and signifies nothing.
The agreement between the
1958 estimates may reflect the fact that the air beta measurements in 1957
and 1958 were made at the same place
(Utah State Department of Health).
fortuitous.
(Salt Lake City) by the same agency
However, the 1958 agreement may be
A larger difference is seen in the 1952 estimates when the air
samples were taken at Ogden and Price by a different agency and the times
after detonation were not given (©) .
It should be noted that in the 1962 incident individual doses ranged
from essentially zero up to at least 14 times the state average (79) and
similar variations have probably occurred in previous years.
Despite the limited accuracy of these estimates, 5 conclusions are
suggested:
(a)
The exposure in 1962 was small compared to that during several pre-
ceding years.