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CHAPTER IV
TASK GROUP 7,4 AND THE SHOT SERIES*
Originally, Joint Task Force SEVEN had three primary scientific objectives in CASTLE:
to fire seven experimental devices, six of which
were in the megaton range, and three of which were to be proof tests of
emergency capability weapons; to obtain diagnostic information on these
devices necessary to evaluate properly their performance in case of success or failure; and to obtain effects information on megaton devices.
The intention was to fire five devices developed by LASL and two devices
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developed by the University of California Radiation Laboratory at
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