of contaminated food. Food can become contaminated by direct fallout on unprotected food
or through metabolic assimilation by plants or animals. Dust-proof containers and undamaged cans provide protection from the first hazard. Cans, etc., should be washed before opening. Other food could be cleaned and used if subsequent monitoring indicated that
the fallout material had been removed.
57. Patterson, R. L. and Blifford, I. H.
(1957).
ATMOSPHERIC CARBON-14. Science 126, 26-28
58. Pinke, A. S. LIMITATION OF FISSIONABLE MATERIAL IN WEAPONS.
Atomic Scientists 13, 177-8 (1957).
59.
Bulletin of the
Poling, James. BOMB-DUST RADIATION. Better Homes and Gardens 35, No. 5, 71, 172,
174, 179, and 182-3 (1957).
60. Russell, W. L. SHORTENING OF LIFE IN THE OFFSPRING OF MALE MICE EXPOSED
TO NEUTRON RADIATION FROM AN ATOMIC BOMB. National Academy of Sciences 43,
324-329 (1957).
61. Romney, E. M., Neel, J. W., Nishita, H., Olafson, J. H., and Larson, K. H.
PLANT UP-
TAKE OF Sr®™, y*!, Ru!® Cs!37, and Ce! FROM SOILS. Soil Science 83, 369-376 (1957).
62. Saal, Herbert. WHAT IS THIS STRONTIUM 90 BUSINESS?
30, 32, and 34 (1956).
American Milk Review 18,
63. Saiki, Masamichi. ON THE RADIOELEMENTS OF FISHES CONTAMINATED BY THE
NUCLEAR BOMB TEST. Japan Analyst 7, No. 7, 443-9 (1957).
64. Sandor, Szalay and Denes, Berenyi. OBSERVATIONS OF UNUSUAL RADIOACTIVITY IN
PRECIPITATIONS WHICH FELL IN BEBRECEN BETWEEN APRIL 22 -DECEMBER 31,
1952.
Magyar Tudomanyos Akademia, Budapest, 13p. (1955) (in Hungarian).
It is suggested that radioactive fallout may be useful for the meteorological study of the
movement of air masses, if an international organization records fission fragment concentration after atomic test explosions.
65. Schumann, G. ARTIFICIALLY RADIOACTIVE PRODUCTS IN THE ATMOSPHERE.
Zeitschrift fur angewandte Physik 8, 361-4 (1956).
The by-product activity arising from atom bombtest was investigated in Heidelberg by
a filtration method during March 1953. The measurementof the activity on the filter was
accomplished by a cylindrical beta-counter. The decay was proportional to t”(1 + x), where
x is of the order of magnitude of 0.1, and thus approaches t"!. The time of explosion can
be determined by extrapolation of the reciprocal activity as a function of time.
66. Setter, L. R., Hagee, G. R., and Straub, C. P. ANALYSIS OF RADIOACTIVITY IN SURFACE WATERS. PRACTICAL LABORATORY METHODS. American Society for Testing
Materials Bulletin, No. 227, 35-40 (1958).
67. Sievert, R. M., Gustafsson, S., and Sylander, C. G. INCREASE IN y-RADIATION FROM
POWDERED MILK AND BEEF. 1953-1956. Nature 178, 854-55 (1956).
Samples of powdered milk and beef preserved during the years 1953 to 1956 were examined for the presence of y-radiation. The higher y-radiation found in the last year was
attributed to an increase in fission products. Data are compared with measurements on a
series of children.
68. Smirnov, N.S. ON THE EFFECTS OF ATOMIC EXPLOSIONS ON THE CONDITIONSIN
THE ATMOSPHERE. Izvestiya Akademii Nauk S.S.S.R. Seriya Fizicheskaya. 1227-31
(1956) (in Russian).
Effects of atomic bomb explosions on the increase in the atmospheric radioactivity and
its influence on the weather has been reviewed.
69. Stanley, Charles W. and Kruger, Paul.
DETERMINATION OF STRONTIUM 90 ACTIVITY
IN WATER ION-EXCHANGE CONCENTRATION. Nucleonics 14, 114-18 (November 1956).
It appears that Sr® can be used as a measure of the fission product contamination of
water. A very sensitive method of water analysis of Sry using ion exchance concen164