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23.
Tritium Production.
Based on an over-all appraisal of
the needs of the thermonucleer program,
fission weapon development,
for weapons,
the possibilities in
and fPissionable material requirements
the Commission dccided, with the concurrence of the
Department of Defense, (a). to discontinue the enriched U-235
loading of the H pile at Hanford for tritium production, (b) to
continue to use the excess reactivity of pile H,
or its
equivalent, for tritium production, end (c) to use the excess
reactivity in four of the Hanford piles,
the production of uranium 233,
or the equivalent,
for
discussed latcr,
Fission Weapon Development
24. Condensed development sehedules for the several
fission models arc shown in the adjoining chart.
and progress of work on fission weapons,
The status
by weapon model is as
follows:
Mark 5.
oe
25.
(Imploston-type bomb;
outside diameter 45 inches;
approximate weight 3,100 pounds)
Production of components has been in progress for
several months,
Weapon operability will be dependent on
deliveries of the associated test and handling equipment
required for this model,
Tn general,
design of test and
handling equipment for a given weapon cannot be frozen until
destgn of the weapon has been finally established;
hence,’
preduction of the associated equipment, much of which is special
electronic apparatus,
tends to become the controlling factor in
achieving stockpile operability.
will begin in Februery 195°,
is May 5,
Initial stockpiling of bombs
and the operational stockpile date
195°,
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