S454 OPERATION CASTLE WT-917 (EX) EXTRACTED VERSION Project 2.6a Chemical, Physical, and Radiochemical Characteristics of the Contaminant Pacific Proving Grounds March — May 1954 Headquarters Field Command Armed Forces Special Weapons Project Sandia Base, Albuquerque, New Mexico September 1955 NOTICE This is an extract of WT-917, Operation CASTLE, Project 2.6a, which remains classified SECRET/RESTRICTED DATA as of this date. Extract version prepared for: Director DEFENSE NUCLEAR AGENCY Washington, D.C. 20305 15 May 1981 Approved for public release; distribution unlimited.