6 in Table V were obtained by scaling Gustafson's estimates up or down using the updated intake data in Table IV. These estimates indicate that including Arrowroot in the diet increases the dose to bone by about 0.8 rad in 5 years while whole body dose remains the same. ‘Including Arrowroot and Crab in the diet without a dietary supplement of calcium increases dose to bone to almost 8 rads in 5 years or twice the 4 rads in 5 years mentioned above. With a calcium supplement including Arrow- root and Crab in the diet brings dose to bone very near the 4 rads in 5 years value. However, in the interest of placing only those restrictions on intake that are actually needed, it is suggested that Arrowroot and Crab can be left in the diet provided the calcium intake in the diet is ee eet! brought up to 1 gram per day. There is the additional consideration that inteke of Coconut Crab will probably be self limiting in that an intake of 14 grams per day by as many as 100 people would require 600 crabs per year. Large numbers of crabs have not been seen on Bikini Island and some were destroyed during the vegetation clearing operations in 1969. . Unrestricted use of local foods at an intake corresponding to the Rongelap diet could bring whole body dose up to the 4 rads in 5 year level and dose to bone up to about 50 rads in 5 years if an edible variety of Pandanus was available which is not the case. The wisdon of the Ad Hoc Committee's recommendations is that when edible Pandanus does ‘become available on Bikini, exposures such as those above will not occur. | fe 28 ast