Ir.
The diagnostic experiments for LASL can
be done if Castile should be as early as September
1953.
III. The preparation of our own devices could
probably not be done in time for a test as early
as September 1953, but could be done if Castle
were in late winter or early spring 1954
Iv.
<Any delay beyond spring 1954 in testing
these devices would in our present opinion, result
in an equal delay not only in our immediate objectives, but also in our long term contribution to
the weapons
program,
We therefore recommend that, in order to optimize the UCRL
contribution to both the long range and short range program,
Operation Castle be held in spring 1954.
Sincerely,
[3/
“HERBERT F, YORK
~7-
Enclosure "B”