AST sag
fh
miltagine
Phe
—
po,
ou.
1a le Re ee tee aeee a
nt dete at
5
BIOLOGY AND MEDICINE
oo
re
fallout from tests at NTS. Results of analyses completed bythe endof the quarter are given
EL
below, These values are substantially lower than values for these areas derived from theoSop
retical calculations. The difference between the actual and expected strontium 90 content mayresult from suchfactors as weathering and low rainfall in these areas and from the fact that
Jot
strontium 90 tends to form a smaller percentage of nearby fallout than predicted from tables-
of theoretical composition of mixed fission products.
Strontium 90
a
(millicuries per ‘square> mile)
>
-
Eureka, Nevada
St. George, Utah
oF
Overton, Nevada
Mesquite, Nevada:
15.3.
14.9
14.6.
Barstow, California
-
oe
|
Jt
|e
.
i
a
1.96
tee
For comparison, values for some other locations in the United States are given below. It
will be noted that the values for soils collected around NTS are not significantly different from
the values for these other locations.
Location
|
Strontium 90
Rochester, New York _
I
j
‘38.0
Rapid City, South Dakota
Detroit, Michigan
te
of
(millicuries per square mile)
Memphis, Tennessee
New Orleans, Louisiana
i
oo bw
5.2
/
i-
:
re
EY
9.7
‘
'
oe.
24,1:
Alamo, Nevada.
Bishop, California.
=§-_
oo
29.6
26.6
~
Caliente, Nevada
36.2
30.7...
arom ee dion
Cedar City, Utah
Lund, Nevada
Beaver, Utah
wo,
42.3
Tempiute, Nevada
as
31.7
-
Seattle, Washington .—
Los Angeles, California
.
30.4
29.9
21.9
bos
|
27.5
8.3
Lo.
|
(Values obtained from other locations were all within the -
range shown above.)
PREPARATION FOR LARGE -SCALE RADIOEPIDEMIOLOGIC STUDIES
About 30 scientists engaged in| human radiobiologic studies attended a meeting at AEC :
headquarters in September to advise on planning for large-scale studies of the effects. of lowlevel environmental radiation on human populations. Effort was made to design investigative
procedures for measuring general fitness and the effects that environmental radiation may .
have on fitness. Particular attention was given to leukemia induced by radiation and to the
effects of radiation at different altitudes. The first part of the meeting was devoted to review —
of the status of studies dealing with “ready-made” human radiobiologic situations, such as
those at Hiroshima and the Marshall.Islands and those presented by accident cases, radium
UNCLASSIFIED
ro:
ae
wt eee tele ce me ee me
;s
Location