:
_
INTRCDUCTION
ThePREMERA, device was fired May 14, 195 as a barge shot in the crater
of the Ivy "Mike" device at Eniwetok Atoll,
It represented the Los Alamos Scientific Laboratory's attempt at
DLL.
At the beginning of the Castle operation the device was to be fired
amt south of Yurochi on Bikini Atoll at the same zero position
o
BGELIILD
.Poon e:rly weather celays in the Castle operation led to the suggestion
at Eniwetok in order to be able to accept
Howaver,
by whe time the plan was carried out, weather conditions had changed, aid
satisfactory weather conditions alloned firit-~
_
Wee ss
UN
Some weather that would not be acceptable for fMring at Bikini,
bok ingmE
Pa
~
# gtate
of making ready to fire
bred
The total energy release was maasured by ball-of-fire xsthods to be
whers the uncertainty is dus to having satisfactory pictures
The energy release dua to fission aprears to have
An oth o dled
DELETED
ww
from only cne position.