Biology and Medicine UNCLASSTF TED in those countries involved in nutrition and food programs in the collection of foods comprising the principal sources of calcium in the diet. These samples are to be analyzed for their strontium 90 content to ascertain the amount of this fission product which may be entering the food chain. Following discussions in each country to determine the principal foods of interest in the collection program, arrangements were made to collect samples and send them to the Health and Safety Laboratory, New York Operations Office, for analysis. The results of the analytical work will be made available to the countries concerned before they are published here. Those countries which have the necessary equipment and capability will be provided with duplicate samples on which they will perform their own analytical work. In Chile, five different geographical areas, as well as the City of Santiago, were selected for sampling. Foods to be sampled are wheat, flour, potatoes, green vegetables, and milk. In Argentina, milk, green leafy vegetables, and potatoes will be sampled from four geographical areas. In Brazil, five geographical zones will be sampled for a variety of foodstuffs, including local dried milk. Since there are gummedpaper sampling stations in Brazil, the collection of foods will be correlated with the gummed-paper stations whenever feasible. In Peru, foods will be sampled from the arid coastal area, the high sierras, and the jungle area on the upper Amazon. Contract Negotiations During this period the Division of Biology and Medicine evaluated and approved 53 contract renewals totaling $1,424,412. broken down as follows: Amount of contract $10,000 and under $10,001 - 20,000 $20,001 - 50,000 $50,001 - 100,000 Over $100,000 These can be Number of contracts Total amount 21 $170,846 17 9 3 3 UNCLASSIFIED 249,463 285,924 2h7,275 470,904

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