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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.