-001-001
Order number 940406-16 5953-13
page 23
set 5 wi th 341 of 341 items
uniform over the entire surface of the earth, with some
tendency to peak at equatorial latitudes, and some
tendency to concentrate in regions of high rainfall.
After deposition, the Sr{sup 90} enters the soil and is
assimilated by the plants.
In addition, plants gain a
considerable fraction of the precipitated radiostrontium
by asSimilation from the surface of the leaves. Sr{sup
90} is found largely in the animal skeleton. At the end
of
1955,
the average soil
in the
latitudes
O{sup
0}
50{sup O}N is expected to show an assay of about 5
Sunshine Units
to
(11 dpm/g Ca), while about 3.5 is
expected elsewhere,
the average soil being taken to
contain 20 g of Ca/ft/sup 2/ in the top 2.5 inches in
forms available for plant assimilation. Human bones were
generally found to contain somewhat less than 1 Sunshine
Unit.
801. KEYWORD(S)
The ratio of Sr{sup
90}
to Ca in the bones of
grazing animals, such as cattle and sheep, ran higher in
many instances, rising to 20 or 30 times those in
humans. Milk products showed assays of 1 to 5 Sunshine
Units. It is to be noted that radiostrontium constitutes
comparatively little genetic hazard because it is
located largely in the skeletal structure.
STRONTIUM 90/environmental studies ;STRONTIUM
90/uptake ;SOILS/radionuclide kinetics ;SUNSHINE/reviews
; SKELETON/radionuclide kinetics ;FOOD/radioactive
contamination ;MILK/radioactive contamination ;WATER
SUPPLIES/radioactive contamination ;CATTLE/radionuclide
kinetics ;SHEEP/radionuclide kinetics ;DOMESTIC
ANIMALS/radionuclide kinetics ;MAN/radionuclide kinetics
;
ATMOSPHERIC BURSTS/atomic cloud rise
;
ATMOSPHERIC
BURSTS/fallout ; ANTARCTICA/fallout ;EARTH
PLANET/fallout ;USA/fallout ;FALLOUT/environmental
studies ;FALLOUT/uptake ;LAKES/radioactive contamination
;RIVERS/radioactive contamination ;CASTLE/fallout ;
WASHINGTON DC/fallout ;PLANTS/radionuclide kinetics ;
FOOD CHAINS/radionuclide kinetics ;UPTAKE; RADIONUCLIDE
MIGRATION; SOILS; ATMOSPHERE ; SUNSHINE; SKELETON; FOOD; MILK;
CATTLE; SHEEP;MAN;FALLOUT;HEIGHT OF BURST; SNOW; USA; RAIN;
LAKES; RIVERS; CASTLE; STRATOSPHERE; RUNT I1; ZOMBIE; PLANTS
Item 38
WT--1366
Radiological safety. Operation Redwing - Pacific
Proving Grounds, May-July 1956
150.
110.
REPORT NUMBER
PRIMARY TITLE (M)
70.
710.
371.
34.
950.
PERSONAL AUTHOR ( M)
CORPORATE SOURCE
PUB. DATE (YYMMDD )
CLASSIF. LEVEL T EXT
ABSTRACT
5003220
Jacks, G.L.
Los Alamos Scientific Lab.,
570500
secret
NM
(USA)
This report contains a description of the mission,