189 The term “roll-up” is applied to the recovery of all equipment and materials in excess to the needs of any site or at the close of test operations, and putting same in such state of repair and preservation that only minimum maintenance will be necessary until reuse is required. For record purposes, the work connected with roll-up was placed in two categories: (1) construction and camp equipment; (2) equipment in scientific stations. Roll-up commenced when heavy construc- tion neared its end. After serving its purpose, equipment was returned to the main base at Elmer where it was scheduled for overhaul, including sandblasting, painting, and application of other preservatives before being placed in storage. Roll-up of camp facilities proceeded as a parallel operation along with the preparation of various sites for scheduled test events as previously noted. With the exception of a few buildings that could be removed bodily, expend- able buildings at shot-island camps were not salvaged. Roll-up of the equipment in scientific sta- tions will be accomplished by preserving equip- mentin place wheneverfeasible. This is a change in the method used at the end of Operation CASTLE when the equipment was dismantled and shipped to Elmer for processing and storage. Some damage was incurred in the dismantling and shipping, and in some cases items lost their identity with respect to a specific station. To eliminate these unsatisfactory conditions, pre- servation processing will be accomplished in place and will include cleaning, painting, and the application of preservatives and weather- proof covering. All stations will be cleaned and enclosures will be sealed with weatherproof pa- per. Only such equipment as motors, electrical generators, and certain electronic items requiring CHAPTER Vi, SECTION 1 dehumidified storage will be returned to Elmer. All items will be properly tagged to identify them with the specific station from which removed. Periodic inspections are planned after test operations, and maintenance will be undertaken as necessary to keep equipment in good condition. Roll- up of off-atoll installations was effected as transportation could be madeavailable. Roll-up of each site was completed as follows: Kapingamarangi 27 July; Ujelang 31 July; Kusaie 26 July; Tarawa 29 July; Uterik 5 August; Wotho 6 August; and Rongerik 7 August. The post-test roll-up in Bikini Atoll was completed by 15 August 1956 and the Nan camp was evacuated on that date. Prior to this evacuation, all wooden buildings were painted with one coat of aluminum paint. Limited camp and construction equipment was left at this site for the use of maintenance crews that will be sent to Bikini Atoll when transportation is available. Included in the equipment left at Nan was one Osgood crane, a surveyed tractor, two surveyed trucks, a 30 KW generator, one small distillation unit, an M-boat, and a DUKW.The limited facilities left at Nan will eliminate the need for frequent water transportation since crews can be airlifted and self sustaining for the anticipated short periods of the maintenance calls. The successful integration of User agency requirements wih the mechanics of personnel assignment, transportation, radiological safety, and evacuation was madepossible by the cooperative spirit exhibited by the various components of the Joint Task Force. Through mutual application and cooperation, problems that arose were adequately resolved and Operation REDWING proceeded to a successful conclusion. THE END Page 6-7