LALORATORY PROGRAM ERERT Several phases of Analytical Branch operations other than cirsct enalyses are related to the strontium program. Progress on these projeots is reported here for completenesse Wisconsin Milk Experiment Dr. Alexander collected samples during a milk drying run at Columbus, Wisconsin on November 13, 1956. Dried milk was taken at the start of the 16 hour run, and every hour to the end. Whole milx from the start and end and caustic washes from the clean-up were also takene Since processing consumes about one tank per hour and one tank represents the largest blend made, the test should indicate the variability that might be expected in Sr-90 and Cs~-137 for a normal rune Since our normal sampling is a 5 pound can selected weekly, this variability will be extremely important. Cs~147 Analysis Analysis of certain samples for Cs-127 will help in under= standing parts of the strontiun program, as well as having value in themselves. The estimation of gamma dose from fallout will rely heavily on Cs-137 determinations for old debris. The gummed film is adequate for evaluating fresh activity, but analysis of pot samples for Cs-137 will assist in assigning an age to the material. The concentration of Cs-137 in foods and in human urine will be of direct intereste - il -