be proportional, The corresponding maximum electrical demand was es- timated to be between 475 and 650 kw, The increase from 425 to 475 kw for 600 population was due to increased communication requirements. By August 6, 1949, at which time generators were being procured, the estimated population was 1,830 and the corresponding demand for power was 545 kw, which included 45 kw for radio communication, Five 142 kw generators for a total capacity of 710 kw (providing a firm capacity of 568 kw with one unit out of service) were ordered, In July 1950, the increased power demand of the Task Force Groups living and operating on Eniwetok Island made it necessary to provide a sixth unit for the power plant. This unit was one of the 195 kw units requisitioned on July 3, 1950. The addition of this 195 kw unit on Eniwetok increased the total generating capacity of this plant to 905 kw, with a firm capacity of 710 kw with the largest unit out of service. Loads continued to increase on Eniwetok Island until, in September 1950, the maximum demand had reached 845 kw, This increase consisted of 652 kw originally estimated, plus 37 kw for five recreational buildings built by TG-3,2, library, hobby shop, athletic club, and a carpenter shop, plus 156 kw for the following buildings: transmitter, 90 kw; reefers, 2.5 kw; warehouses, 20 kw; and Air Task Group, 43.5 kw. Since the firm generating capacity, with the largest unit out of service, was 710 kw, it was necessary to provide additional capacity. Certain facilities were already provided with standby power generating units, each with complete duplicate back-up units. These were of the following capacities: transmitter, 140 kw; receiver, 5 kw; Loran Station, 35 kw; Air Task Group, 60 kw, In addition, there were also available a number of 75 kw, 208 volt, selfcontained portable diesel engine-generator sets, These portable units were reconditioned, and five of them were placed in service on Eniwetok Island at points of heavy load concentration to reduce the maximum demand on the main power plant to a quantity within its firm capacity. In this manner the total maximum load was supplied. Inasmuch as the power plant was considered a part of the permanent test base operations at Eniwetok Island, this plant was designed, using the standardized 24-foot prefabricated aluminum buildings which had been selected for all permanent camp buildings, Two standard buildings were erected side by side and 4 feet apart, making a total width of 52 feet, The entire aluminum building was built upon a 6 foot high concrete wall, so that sufficient head room was obtained for the exhaust silencers which were mounted above the diesel engines, The electrical generating equipment was located in one 24-foot wide section and the water dis- tillation equipment in the other, with the 4-foot space between used as a pipe gallery. The advantages of using generating units similar in design even though the ratings varied and of using distillation units identical in design in all plants became apparent at the time of designing the 5-207