| am) Project 2.65 — Analysis of Fallout and of Base Surge - M. Morgenthau OBJECTIVES The general objectives of project 2.65 participation in REDWING were to: (1) obtain fallout samples on land and to perform radio- physical and radiochemical measurements on the samples; (2) prepare dose rate contours of the atoll area from information gathered by this project, other projects, and Rad Safe; and (3) evaluate the role of the base surge in transport of radioactive material. DESCRIPTION AND EXPERIMENTAL PROCEDURES ‘ Intermittent fallout collectors (IFC) and gross fallout collectors (GFC) were installed on islands in the Bikini Atoll and on the YAG's and LST in the fallout zone. ~F The IFC timing intervals were 5 min or 30 min, depending on location and type of shot. The equipment was installed prior to the shot and was activated by EG&G Blue Boxes. of the stations also incorporated a tape fallout monitor. Some A station at the Rongerik weather station was instrumented with a distant fallout collector and a tape fallout monitor. RESULTS No fallout samples were collected at any station. Ground samples picked up in the vicinity of intended ground zero showed insufficient activity for analysis. The planned aerial survey of the atoll was cancelled due to the lack of activity on the islands of the atoll, Fo Toeptcer LP os Lok: pt ~ 36 -