TABLE 2,1 - Predicted Downwind Contamination Levels for Shots 1,2, and 5 after Detonation (r/hr at times indicated) Shot 10nmi i5nmi 20nmi 25nmi 30n mi 5 n mi 2 hr [3 hr [2 hr|3 ar|2 hr[3 hr|2 hr|3 br|2 br|> hr(2 brl3 br 1 (based on 6 MT yield) 10,000] 5000 5000 {4000 3000) 3000}1200}2000} 800}1500} 0 800 3000 /2500}1300/1500} 200{ 400} 0 200 6000 5000} 4000] 4000} 2000]2000]1000} 2000} O {1000 2 (based on! 3 MT yield) 7,000} 4000 700]1100} 5 (based onl S. 5 hT- yiei2) 12,000) 7000 sea phase required employment cf sea-going vessels under the Naval Task Group Command. Zelertei Land Stations At Bikini, the islands of Able, Fox, How, Love, han, Groce, Uncle, William, Yoke, and Zebra, were used for sampling and obtaining gamma field measurements, Stations consisted of concrete emplacements with instruments installed in and about them. At Enivetok, the islands of Irene, Bruce, Yvonne, Wilma, Leroy, Alice, Janet, and Nancy were used for sampling end for obtuining gamma field measurements. where possible, st-.tion emplecements remaining frem IVY fallout sampling were utilized; otherwise inctriments were pleced in the open and suitable tie-down arrungezents improvised. Stations were estublished on the following outlying islands: Rongerik, Kusaie, Majuro, Ponape, Wake, Guam, Kwajalein, and Johnson. 2e1.2.2 Lagoon Stations Rectangular-grid arrays of stations were established for lagoons of both test atolls, as shown in Figs. 2.2 and 2.3. These ccnsisted of anchored buoys to which rafts were attached (see Fig. 2.4). 2ele2e3 «©=—6Sea Stations campling in the open ocean was accomplished by means of free~- floating buoys to which, in some cases, refts were attached. Plans were made to provide the complete coverage indicated by Pig. 2.1 for one land 24 er ee nea ead ve eccrs , en a Bo Arteis 0 I AS