ADMINISTRATIVE INFORMATION This report is one of a series of technical reports on the gamma- ray spectra of fallout samples collected at various weapon tests. Previous data has been reported in this laboratory's USNRDL-420, 31 August 1953, USNRDL-TR-32, 26 January 1955, and USNRDL-TR-106, 27 August 1956. The sample study reported here was conducted in conjunction with Project 2.6.3, Operation REDWING. The work was done under Bureau of Ships Project No. NS 081-001, Technical Objective AW-7, and is a continuation of that described as Subtask 6 in this laboratory's report to the Bureau of Ships, DD Form 613, July 1956. Similar work is described under Program 9, Problem 1, in this laboratory's Semi-annual Progress Report, 1 July to 31 December 1956, Progress Report USNRDL-P-1, January 1957, pes iv se eee eee