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was designed by the UCRL at Livermore to
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than that used in the previously
tested devices.
to fall-out and sampling criteria were satisfactory, but heavy
showers in the area caused serious difficulties from the point of
view of test instrumentation.
Records show that the light trans-
mission conditions were such as to automatically prevent firing
of the shot from about 4 A.M. until about ten minutes before shot
tine.
At shot time the transmission from Eninman to Enyu was
sufficient to allow firing, but scattering of the Light by fog
or rain was such as to prevent proper photography.
Thus no photo-
graphs of the fireball were obtained from any station, and the
early “hot spot" photography also failed even though the instrumentation operated properly.
However, enough data were obtained
by other meens (Radiochemistry, progress of reaction studies,
threshold detectors, shock arrival times) to obtain a fair picture
cf what went on.
The times of arrival and overrressures on Airukiraru,
es
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*.Tuxtiji and Eniirixim indicate a total energy release of sone
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At the time of firing the atmospheric conditions with respect
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rheEEEshot was detonated on Eninman Island of