Cg
some cases placed behind pinhole devices and also located so that the
blast pressure wave would halt the exposure.
|
As a replacement for the "Dead Duck" which sank prior to test
X-ray an LCM with the code name "Lame Duck" was procured through TG 7.3
for testing a field collective protector.
Since both of the protectors
available for Operation SANDSTONE had been destroyed in test X-Ray two
additional ones, using electrically driven blowers were shipped by air
from the ZI and arrived on Yoke-minus-3-day.
One of these was installed
upon arrival and after. a 24-hour check the "Lame Duck" was anchored in
position about a mile downwind from the Zero tower,
In addition to the
field collective protector, a cascade impactor was also placed in the
LCM for the measurement of the particle size of the material falling
from the cloud.
Island.
Another cascade impactor was located ashore on Rujoru
Because of the interest shown in the particle size of the
cloud material and its relationship to the problem of fallout, Colonel
Cooney secured permission to place one cascade impactor in a drone
plane.
No other major changes were made in the tests being carried out
within TU 7.6.6 for test Yoke.
Nearlyall the instruments and measur-
ing devices were in position prior to Yoke-minus-2-day and final
operations were conducted without incident on the morning of Yokeminus~l-day.
The postponement of Yoke by one day necessitated the
return of personnel to the "Lame Duck" to refuel the motor-generator
set and reset the clocks on the cascade impactors.
The heat sensitive
materials in some cases required replacing because of damage by the
88
Section IX