— .
UNCLASSIFIED
Por Vii
Biology and Medicine
PROJECT SUNSHINE (UNCLASSIFIED)
igh
ce” oe
Monitoring and sampling of worldwide radioactive fallout continued throughout the quarter.
The Health and Safety Laboratory of the New York Operations Office prepared a report which
brings together all the data that have been obtained on the deposition and uptake of fallout
since systematic monitoring and sampling began.* The data on gummed film,surfaceair
monitoring, Pacific Ocean water, and human bone sampling are only summarized in the report
because they comprise hundreds of thousandsof individual stings. However, the detailed in-
Leo.
a 33
aes
formation is unclassified and available to anyone.
.
.a
pager’
he
.
é:
at =
vip tpnelbe ey
_
an
wee
~
Stratospheric Monitoring
.
.
Table 1 summarizes the results of analysis for strontium 80 of stratospheric samples
collected during the period November 1956 through January 1958, based on data available
°
Table 1—-Average Concentrations of Strontium 90 in Stratospheric Samples Collected
November 1956 through January 1958*
.
(Strontium 90 content expressed in micromicrocuries per 1,000 cubic feet of air,
Minneapolis, Minnesota
Altitude
(feet)
:
Average
Number
strontium 90
of
content
s2mples
San Angelo, Texas
Panama Canal Zone
France Air Force Base
Number
of
samples
Sn ie OMe mals
reduced to standard conditions.)
Sao Paulo, Brazil
Average
strontium 90
content
Number
of
samples
Average
strontium 90
Content
Average
Number
strontium 90
of
content
samples
10
545
14
7245
2
939
11
+
:
a,
t
-
90,000
7
3
‘
7+10f
i
80,000
10+7
8
15410
11
14411
5
1228
14
t
Tae
65,000
24415
17
29212
10
29 + 26
6
17413
11
‘
5
50,000
945
19
242
10
~
0
11
.
53
:
* Based on data available through June 26, 1958. Anelyses bad not teen completed on all samples collected during
this period. The program calls for one sample a month from each ajtitude at each location. In some instascesz the sample
was not recovered.
f Range sbows one standard deviation above and below average. Siandard devistions sbown include both errors of
*Copies of this report, ‘‘Environmental Contamination from Weapons Tests ~A Compilation of Data
Concerning Transport, Deposition, Distribution, and Biological Uptske of Worldwide Radioactive Fallout,”’
HASL-42, were provided to the Joint Committee. The report will be sold by the Office of Technical
Services, Department of Commerce.
*
.
38
|
DCE ARCHIVES
tot UNCLASSIFIED
aa te
CH
Ee
—
:
Sake
2 These samples were collected in the vicinity of the tropopause and protably do nm represent sirsioapderic concestrations. The 50,000-foot sampling level fs usually belowthe stratorphere a: this Jocation.
Net eee + hae
metsurement! aod variations In strontium $0 content from month to month
249