83.
Shipman, Wisiien H.
et al
DETECTION OF MANGANESE-54 IN RADIOACTIVE FALLOUT. (cont'd.)
The tnsclubie Hr0g was reduced with matis03: dissolved in
&
HCl, and the mixture was freed of interfefing nuclides
with Fe(OH) (OAc).
The Mn was precipitated as MnNHPQ,
“and ignited to Mn2P207, which was counted.
The
of the gj solated sample was identical with that of
tic Mn7"*.
y-spectrum
authen-
This nuclide accounted for 40 per cent of the
total y-activity of the sample. Calculations indicate
that megacurie quantities were produced at the time of
detonation, possibly from steble Mn and Fe, emphasizing
the importance of induced radioactivity in fallout.
SHORTER-TERM BIOLOGICAL HAZARDS OF A FALLOUT FIELD.
Washington, D. G., U. 8S. Government Printing Office,
1958.
236p.
Y3.At7:2F 19.
On December 12, 13, and 14, 1956, a symposium on the
shorter-term biological hazards of a fallout field was
held at the Pentagon, Washington, D. C., under the
joint sponsorship of the Atomic Energy Commission and
the Department of Defense. The purposes were to review
the basic information related to the more immediate
effects of fallout, both biological and physical, lab--
oratory and field, and to suggest new research approaches to the many unresolved problems.
85,
Sievert, R. S.3; Gustafsson, S.3 and Ryland, C. G.
GAMMA RADIATION FROM SOME SWEDISH FOODSTUFFS. Arkiy
Fyaik le, 481-9 (1957).
The y-radiation from powdered milk, beef, bone from
cattle, and vegetables, collected and preserved in the
years 1952 to 1956, has been investigated in May to
September 1956 by means of two high-pressure ion chamber
apparatuses placed in a low-background laboratory. In
every case a significant increase was observed which
seems to originate from fallout from atomic bomb tests.
Investigations of the y-radiation from children have
been repsated, but no increase could be observed in
comparison with earlier tested sudjects in approximately
the same age and weight classes (101 subjects, 195%;
79 subjects, 1956).
(Some further measurements of iG
radiation from powdered milk, beef, bone, and thyroid
from grazing cattle have been added in the proof).
22