in the population and would not significantly affect these estimates. a result those computations nave not been repeated here. The concentraticns of °*Sr would seem to be of greatest concern with respect to internal dose. In this regard the recommendations of the Ad Hoc Committee for removal of top soil from the site of newly planted pandanus and possibly breadfruit trees, and the addition of a calcium supplement to the diet should be most effective in reducing the dose due to 9%Sr, MED 5065550 44 As