ee ee a aee Co nn eaMehitendtiiah epee ( _ .! survey found radiation levels to be much lower thaa anticipated. The complete helicopter survey enmtsssiens confirmed the low contamination levels encountered by the initial survey. Several plausible _Feasons have been eivanced for the absence of heavy contamination, The most reasonable being that the water waves genereted by the blast washed over the land areas and washed the early fallout away. 6. WILSON I cloud tracker vas directed to make a standard E-type search beginning at H+6 hours in a sector, true bearing 030° through 060°, with apex on BIKINI. WILSON I wes instructed to return via UTIRIK and RONGERIK. WILSON I reported no intensity greater than 50 mr/nr. WILSON II fles the pattern indicated in TAB , beginning at H+16 hours, WILSON II enzountered intensities no greater then 10 mr/hr. Lew intensities were encountered throughout the flight indicating a general smezring of the bomb debris by the light and varileble winds at various levels. Te The off-atell monitoring stations sibmitted radiation reports or an hourly schedule beginning et O800H, 12 June, and continued on this schedule through 2000M, 12 June. No significant increase in background vadietion readings were observed et eny of the off-site locations through F+3 days.