INTRODUCTION : During the planning stage of Operation Redwing, discussions 4 : -: were held by staff members of the Atomic Energy Commission, e Division of Blology and Medicine, and the Applied Fisheries i Laboratory of the University of Washington on the probable need for biological surveys to define and evaluate the distribution of radioactive materials to be produced by the 1956 series of nuclear experiments. Following these preliminary discussions, a tentative outline of studies to be pursued during and immediately following the test series was prepared by the Applied Fisheries Labora- tory and submitted to the Division (UWFL-45)” This proposed program contained, among other suggestions, one that called for a survey and evaluation of the radioactive content of the water, plankton, and fish from areas about the test site, following Somewhat the plan of Operation Troll** ceielem ae ae The specific assignment of the Applied Fisheries Laboratory to the survey project was made in a letter of March 28, 1956, from Dr, Charles Dunham, Director of the Division of Biology and Medicine. This letter addressed to Lauren R. Donaldson stated in part: Program of the Applied Fisheries Laboratory, University of Washington, for the 1956 Test Series at Bikini and Eniwetok Atolls, Marshall Islands. February 7, 1956. +4 Harley, John H., Editor, Operation Troll, NYO-4656, March 1956,