» 28 = Concentrations Predicted future | Predicted consen- Predicted consen~ in children, concentrations trations in 1975 trations in 1975 fall 1956 fro strontiue-; froa all Sr-90 if past tests or 90 en groumd be«-|] produced before equivalent wore fore 1957 1957 repeated befare 1965 | 0.8 yuo Sr-90/g Cal 1.5 to 2 yye gti 1.5 te 345 2tes & te 10 gue Si~90/g Ca 3.8 to 9 5 te 12 10 0 35 yye Sx-90/g Ca Wap abe AEC at the suggestion of the Joint Comittes on Atasic Mmergy to attampt to estimate average futare le. veils of Sr~90 in the population. (The full text of a momary report af thie neoting is to be found in the JCAE Hearings. * The figures and predictions summarise the conclue sions of the group and deal with the northwestern part of the U.3.4. whieh is taken as representative of an area with above average 52-90 contamination with respeet to the warld as a whole, The considerations leading to each of the three estimates in the last two columns follow: | : re_fa fe man, dearings before the Special Subeomelttes on Radiation of the Joint Committee on Atomic Fnergy, Congress of the United States, Washington Government ?rinting Office, Parts 1 & 2, 1957.

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