of the skirt at 1.5 minutes and the latest measurement at 10 minutes. Figure 6.14 is an
excellent example of the appearance and multiplicity of skirts visible on this and other shots.
6.5 SHOT 6
.
,
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Because of natural cloud cover, no measurements of the subsidiary features of the
cloud from this shot were possible.
6.6
CLOUD DIMENSIONS AT HIGH ALTITUDES
It was possible to make some rough approximations of the cloud and stem dimensions
of the Castle shots at altitudes of 35,000 and 50,000 feet at times up to 45 minutes.
The
figures presented in Tablé 6.1 are only approximate, because of uncertainties in aircraft
~*
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positions at ‘such late times. It is felt, however, that this information may be of assistance in estimating hazards to which personnel of a sampling aircraft might be subjected
in penetrating the cloud or stemafter a detonation.
37
SECRET
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