CHAPTER Vi, SECTION 1 Measures taken for protecting personnel, equipment, and property were governed by predictions of overpressures, thermal energy, radioactive contamination, and the extent of inundation as furnished by Task Group 7.1. Two conditions of test readiness were applicable to camps and related facilities. When damaging pressures were probable, camps and facilities were rolled-up, but when these conditions were considered remote, they were left intact. In the latter case, precautions were taken against blast, fall-out, and inundation as deemed advisable for each event. Test readiness measures relative to scientific facilities varied according to User re- quest and were governed by whether or not a station participated in an event. Camp roll-up was generally scheduled to commence on D-5 day and be completed by noon of D--1 day. Roll-up consisted of the removal of all equipment, materials, and supplies considered worthy of saving for shipment to Elmer from the Eniwetok Atoll camps and to Nan for subsequent transshipment to Elmer from the Bikini Atoll camps. Schedules of camp services and population forecasts covering the period of D-—5 through D—1 day facilitated Figure 6-1. Page 6-2 planning and execution of the tasks involved. Roll-up was accomplished according to these camp service schedules and in phase with personnel reductions at each site, with provisions for serving food continually through an early lunch period on D—1 day. Practically all of the expendable structures were left standing at shotisland camps. This procedure was considered more economical than dismantling the buildings, transporting the salvable materials to a main base, and processing them for future use. For the first event (LaCrosse) this planning contemplated only the roll-up of the Yvonne camp and evacuating personnel to Elmer from the northern camps in Eniwetok Atoll. The Gene and Ursula camps were to be left in a condition for rapid re-entry. As a result of the widespread radioactive contamination of all islands north of Yvonne caused by the LaCrosse event, the Gene and Ursula camps were unin- habitable for 24-hour occupancy and were subsequently rolled-up. The Yvonne camp had been rolled-up prior to the detonation, and since this area was not contaminated, limited facilities were re-established. Some blast damage occurred in this area; however, repairs were effected for Use of Sandbags For Blast Protection