1Sx0> WT-932 (EX) EXTRACTED VERSION OPERATION CASTLE Project 7.4 Nuclear Calibration Analysis of Atomic Device Debris March-May 1954 Headquarters Field Command Defense Atomic Support Agency Sandia Base, Albuquerque, New Mexico July 9, 1959 NOTICE This is an extract of WT-932, Operation CASTLE, which remains classified SECRET/RESTRICTED DATAas of this date. - Extract version prepared for: _ Director _-* DEFENSE NUCLEAR AGENCY Washington, D.C. 20305 1 April 1981 Approved for public release; distribution unlimited.