CHAPTER IV, SECTION 3 (Neg. No. W-680-1) Figure No. 4-14. Power Plant, Building 339 — Elmer. ing, and other services required for approximately 165 generators used entirely or partly in support of the scientific program. Generators were adequate for the use indicated, and the requirements for reliability and continuity of power through zero time for the various test detonations were satisfactorily met. Distribution was through both overhead and underground lines, depending on blast re- sistance and other factors such as passing under airstrips. Elmer distribution was converted to 4160 volts, and 4160 volts or 2400 volts were used at other sites. Power was delivered at 208/117 volts through conveniently located transformers. There were several outages at the base camps during critical test operational periods, without serious results, due principally to distribution line difficulties. In two cases outages were due to traveling cranes cutting the lines, while other incidents were caused by the salt-laden atmosphere. An unusual incident occurred as a result of the wave action from the OAK event. The salt water intake to Building 347 on Elmer was completely bared as the wave receded: the intake became buoyant and broke loose so that the end remaining was in about three feet of water at low tide. Air-cooled radiator units were readied in case it became necessary to secure the salt water-cooled engines. Emergency replacement of the intake was effected in minimum time. (Neg. No. W-V-189-1) Figure No. 4-15. Auxiliary Power Plant — Nan. Page 423