Two high speed vessels were outfitted with devices for measuring radioactivity as a function of depth and in the air. These two vessels were stationed outside the fallout area during the shot and then proceeded to survey the fallout area making measurements out to about 300 miles from GZ. Approximately twenty-five surface samples and a number of samples from depths were taken for Project 2.63. RESULTS Prior to CHEROKEE oceanographic surveys were conducted in the Marshal) Island Area and in the Bikini lagoon and a field report "Radioactivity Background and Oceanographic conditions in the Pacific Proving Grounds at the Start of Operation REDWING" was submitted on 10 May 1956, a The post shot fallout survey found only one minor trace of activity in the ocean water at a distance of 260 miles and a bearing of 330° from GZ whose importance is questionable. Further evaluation is necessary to establish the significance of this area, A postshot survey indicated insignificant radioactivity in the Bikini lagoon, Radioactive fallout in the skiff area was not of sufficient intensity to trigger the recording instruments, LANL RO - - 32-