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of dust or moisture in distorting the measurements will be an inportantresult of test X-Ray when given further study,
Project Jo L-17/RS(NE)-Uy
-
Test of Animal Containers for suitability
for exposing animals at close rane
AlL four animal tanks survived without evidence of blast damye,
The tenperatiwre in the land tanks due to the sun, rose to about 100° F
while the tan.s in water reached a moctuum daily temperature of around
90° F.
For test Yoke these tanks will be baLllasted to flout 50% submeryed.
Between test X iy amt test Yoke efforts were mide to malify the
various axperiments beim: comluctead in order to overcame sume of the diffi-
culties which developed durin: the first test.
The most important of these
was to provide come protection for the film badyes in order to mininize
their destruction by the intense hut and by the sand stirred up by the
blast wave.
This was acconplished by wrapping the badges ina layer of
flags cloth anl then plicing a thin sheet of aluninun in frent.
Recause
of the hivh intensities of thermal and nuclear radiation detected during
the X-Ray test additioual stations were set up on cdjacent islinis for
the placement of film badges and heal sensitive papers at oraater distances,
For preter protection at closo rane aml to provide more precise data the
thermal radiation pliques were in sane cases placed behind pinhole devices
and also located so that the blast pressure wave would halt the axposiure,
As a repliceriont for the "Dead Dich" whieh sank prior to test X-Ray
an ICM with the code mune "Lame Duck" was procured throuch Td 7.3 for
Since both ef the protectors avail-
tenting a fivld collective pretectar.
able for Cperation GARDGIVNE had been destroyed in test X-Ray two additional
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