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Previous Studies
Pages 8-10

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From page 8...
... lists the quantities of each of a number of radioisotopes that can be retained safely in the body, as well as the concentration of each isotope that can be tolerated in drinking water and in air. The maximum permissible body burden, drinking water and air concentrations are considered to be the levels below which no readily detectable biological damage will occur in man under conditions of continual exposure at those levels.
From page 9...
... However, because of lack of quantitative information, no attempt was made to combine the various factors to obtain an estimate of the level of contamination of the ocean and marine food products associated with stated disposal practices. In 1956 the National Academy of Sciences - National Research Council organized six committees to study various aspects of the biological effects of atomic radiation.
From page 10...
... A careful study is required to determine the safe quantity of each isotope in each situation, including the details of the physical, chemical, and biological factors, and the habits of the human population potentially affected. Continuing studies are required at each disposal locality to insure safety, to determine ultimate steady state conditions, and to detect possible long term variations arising from variability of the environment.


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