HSAs JMMikew December 30, 1958 Or. Robert A. Conard Jr. Medice! Division Brookhaven Mettonal Laboratory Associated Universities, tac. Upton, Loag Island, New York Dear Dr. Conard: ~~ nod Om@aclesiag.a.corracted,teble.ofthe deta on theMarehell .. . tstaad food samples. The correction only eppiies to the celculation of the overall jfevel of Stranttum-90 Ia the diet. This figure should heave been celculated at ebout 300 Strontium Hon sshd Units rather than 900, ta addition, the teble hes been somewhat rearranged but rone of the original date hes been cheaged. Dr, Dvantag hes questioned the relative calcium valves found on these gad previous surveys, ia gelag through pest date tt eppeers there have been some large apeeads fa calctum velve. Part of thie has been due te lack of @ staaderd wet weight basis end t feel thet the present seaptese which were carefully prepered te represent the food es eaten are the best we have. ta any case, the usuel comparisons are on the basis of Strontiom Uaits aad ! know thet these, of course, would not be changed stiace both calcium and strontium are ceiculated to the same bese, Staceretly, joha H. Herley, Chief Anelytical Braach Enclosures b. Table - / ces ‘Ce. be Dunham, DBM G. M. Dunning, DBM (2) Se Ae VM Lough, HS $..B. Whitney, HSA 42 Te