e OFFICIAL USE ONLY = BD YO « The minute traces of radioactivity being found by the TANEY expedi~ tion exiet in proportions predicted by oceanographers. The activity is much smaller than any which would create a health hazard. It is expected that the data collected during this cruise will clear up @ number of presently obscure points in oceanography. The presence of traces of radioactivity from the CASTLE series of tests is being utilized in mapping the course and rate of flow of the North Equetorial current. The expedition will follow these waters as long as it is possible to detect the identifying activity. Valuable information concerning the depth of mixing of surface waters and the rate of turnover of the deeper waters should result from these studies, Commander Albert J. Carpenter is in command cf the U. 8. Coast Guard Cutter TANZY and the members of the scientific team are as follows: Dr. John H, Harley, Mr. Robert Morse, Mr. Rudolph Anker, Health and Safety Leboratory, New York Operations Office, U. 8. Atomic Energy Commission; Dr. Warren 8. Wooster and Mr. Robert Gilkey, Scripps Oceanographic Institute; Dr. Allyn H. Seymour, Institute of Applied Ficheries, University of Washington, OFFICIAL USE ONLY

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