VOL, I BOOK 6 CHAPTER Il BASE PROTECTION SECTION 1. GENERAL In designing the protection for the Base and Test Facilities from anticipated shock pressures considerable thought was given to the selection of methods of protection that would permit installation at any time prior to the experiment without undue interference with the operations of the facilities. Some test data was available for the aluminum buildings. This was obtained from a test of one of these buildings at the time of purchase and from information obtained during OPERATION GREENHOUSEona building of this type which had been subjected to static over-pressures having approximately the same intensity as that expected at Elmer and Fred for this operation, A 'Report on the Base Protection and Evacuation for OPERATION IVY", dated 1 August 1952 recommending the protective measures to be taken, was submitted to the Field Manager, Eniwetok Field Office, After a review of this report by the Eniwetok Field Office, Holmes & Narver was provided a detailed outline of the blast protective measures which were authorized for accomplishment. The action taken for protection of supplies, materials and equipment against radiological ''fall out" consisted primarily of covering with canvas or salvaged balloon plastic material those items which could not be washed with water for decontamination. In general, all provisions and supplies stored in buildings were regrouped in the center of the floor area, away from the open sides and doors. For protection against sea wave action all light marine craft with the exception of one LCM, which was required for final evacuation, were beached with bows toward "'Zero''", Two harbor tugs were docked in the floating dry dock and prepared for ocean tow. The U.S. Navy prepared three steel barges for ocean tow. All other marine craft that remained at the test site during MIKE were moored to buoys located in 10 fathoms or more of water. The following protective measures were accomplished. SECTION 2, BUILDINGS ELMER Bldgs. 100 - 112, 113 - 114, 119, 121, 123, 125, 127, 129 - Barracks: 1. All doors were removed 6-23