The following measurements of ology Laboratory, radioactive fallout made at the Radiobi- University of Utah, are assembled under a None of this material is or has been classified. Single cover. This material has previously been presented as follows: 1) Air Sampling During Time of Pacific Tests (1956), D.R. Atherton, Radiobiology Semi-Annual Report, pg. 59, (Sept. 1956). 2) Potassium 40 and Cesium 137 in Humans, B.W. C.W. Mays, D.H. Taysum, and Glad, Radiobiology Laboratory Annual Report, C00-215, pp. 147-157, (March 1958). 3) Fallout Cesium 137 in Utah Residents: 1958, C.W. Mays, Summary of a talk given before the Biomedical of the Atomic Directors Energy Commission, Cincinnati, Ohio (October 23, 1958). Compiled for Dr. T.P. Dougherty, Director by C.W. Mays, Ph.D.

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