RETURN OF RONGELAPESE of Sr® with time in the food chain (except the land crabs). Although there is obviously a certain degree of uncertainty, the above data and estimates FaebmtpaenPME Re TB eu: indicate that if land crabs are eliminated from their diet, the estimated future body burden of the Rongelapese would be substantially less than 100 uuc of Sr” per gram of calcium. Limiting the intake of pandanus would further reduce the estimated Sr” intake. By means of the continuing medical examinations described below it would be possible to note any tendency 51 of untoward accumulation of strontium—90 with time, and appropriate action could be taken before excessive levels were reached. c. Radiological Resurveys Plans are currently being developed for a continuing and long-range program for radiological resurveys on and around the Marshall Islands. The principal objective will be to monitor the environmental contamination especially for strontium—90.