2-12
od
detonation, based on predictions furnished by the Fallout Prediction Unit,
These collections were nade at an altitude of 1000 feet by '/B=50 aircraft.
The fallout collection was supervised by personnel of the U. S. Naval Radio-~
logical Defense Laboratory.
The project perticipated during shots, Koa, Walnut, and Oak, as it vis
desired to obtain a comparison between the fallout from land-surface end =:
water-surface megaton-range detonations.
Due to various technical problens,
satisfactory rocket samplea were not collected from shots Koa and ‘/alnut,
and this portion of the project was cancelled prior to Oak.
Successful B-579
and /B-50 samplings of the Koa fallout were made; however, early analysis of
the samples indicated they had been contaminated by debris from shot Fir,
fired the previous day at Bikini.
was extended to include Oak.
Walnut and Oak.
For this reason, project participation
Successful sampling was accomplished during
Collected samples were returned to the continental labora-
tories for analysis, and the resultant data was not available at the tine
this report was written.
Very-Low-Yield Detonation, Quince.
Projects 2.9, Gamma Dose lieasurements;
2,10, Residual Radiation from Sube-Kiloton Yields, and 2.11, Neutron, Thermal,
and Gamma Measurements at Various {/ltitudes up to 1500 Feet, were approved
after shot Quince was scheduled as part of Operation HARDT.\CK.
Project 2.4,
Neutron Flux Measurements, was extended to include neutron documentation of
this shot.
The discussion of the participetion of these projects is included
in the portion of this report devoted to shot Quince.
2.1.3
STRUCTURES AND ECULFLENT
The objective of this program was to provide information on the effects
of nuclear bursts on ship structures and equipment, and on various land
structures, under certain conditions that have not been heretofore investigated.
Five of the eight projects were concerned with the ship structures
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