FOREWORD This report presents the final results of one of the projects participating in the military-effect programs of Operation Redwing. Overall information about this and the other military-effect projects can be obtained from WT—1344, the “Summary Report of the Commander, Task Unit 3.” This technical summary includes: (1) tables listing each detonation with its yield, type, environment, meteorological conditions, etc. ; (2) maps showing shot locations; (3) discussions of results by programs; (4) summaries of objectives, procedures, results, etc., for ail projects; and (5) a listing of project reports for the military-effect programs. PREFACE Wherever possible, contributions made by others have been specifically referenced in the body of this report and are not repeated here. The purpose of this section is to express appreciation for the many important contributions that could not be referenced. Suggestions fundamental to the success of the project were made during the early planning stages by C. F. Miller, E.R. Tompkins, and L.B. Werner. During the first part of the operation, L. B. Werner also organized and directed the analysis of samples at U.S. Naval Radiological Defense Laboratory (NRDL). Sample analysis at NRDL during the latter part of the operation was directed by P.E. Zigman, who designed and did much to set up the sample distribution center at Eniwetok Proving Ground (EPG) while he wasin the field. C.M. Callahan was responsible for a large share of the counting measurements at NRDL and also contributed to the chemical analyses. The coordination of shipboard construction requirements by J. D. Sartor during the preliminary phase, the assembly and checkoutof field-laboratory instrumentation by M. J. Nuckolis and S. K, Ichiki, and the scientific staff services of E. H. Covey through the field phase were invaluable. Important services were also rendered by F. Kirkpatrick, who followed the processing of all samples at NRDL and typed manyof the tables for the reports, V. Vandivert, who provided continuous staff assistance, and M. Wiener, who helped with the final assembly of this report. Various NRDL support organizations performed outstanding services for the project. Some of the most notable of these were: the preparation of all report illustrations by members of the Technical Information Division, the final design and construction of the majority of project inStruments by personnel from the Engineering Division, the packing and transshipment of all project gear by representatives of the Logistics Support Division, and the handling of all rad~ safe procedures by members of the Health Physics Division. In this connection, the illustration work of I. Hayashi, the photographic work of M. Brooks, and the rad-safe work of W. J. Neall were particularly noteworthy. The project is also indebted to the Planning Department (Design Division), and the Electronics Shop (67) of the San Francisco Naval Shipyard, for the final design and construction of the ship and barge platforms and instrument-control systems; and to U.S. Naval Mobile Construction Battalion 5, Port Hueneme, California, for supplying a numberof field personnel. The names of the persons who manned thefield phase are listed below. 7 Without the skills