be expended with little loss if this became necessary, The installation identical units at Bikini Atoll afforded a degree of standardization which permitted free interchange of parts or units as required, Salt water requirements were met through the use of shallowwells of simple construction and conveniently located adjacent to distillation plants, The casing used was a perforated spiral-welded steel pipe. For reliability of supply, particularly for fire protection, both gas engine and motor driven pumps were installed. The distribution piping of both fresh and salt water systems was laid in shallow trenches and covered to natural grade, Elevated storage tanks pro- vided the necessary head, and additional ground tanks were provided to permit storage of at least one day's supply of fresh water during peak demands. Topography of the islands permitted the use of relatively short sewer lines with gravity flow. Vitrified clay pipe was used for collecting lines and steel or clay pipes for subaqueous outfalls, Manholes were suitably placed and fitted with standard prefabricated covers. In order to hold plant and manpower requirements to a minimum for the construction effort on Bikini Atoll, the plant and the organization at Eniwetok Atoll was used as the main base for supply and shop facilities. However, limited maintenance and warehousing facilities were necessarily constructed at Bikini Atoll, The structures to house these facilities were inexpensive and on the order of camp structures previously discussed, Sheltered storage was provided only for food, hardware, electrical instruments and parts, cements, and other items which could not be Satisfactorily protected by tarpaulins or left in open storage. Bulk fuel storage was provided at Bikini by the erection of a tank farm on Reere with a loading line leading into the lagoon to POL buoys similar to the installations existing at Eniwetok. Fuel was delivered to the various sites by tank trucks andthen generally stored in small tanks of the Navy cube type elevated on simple timber platforms, Roads were installed at all camp sites, as needed, to serve camp operational and scientific facilities. Suitable surfacing of these roads was obtained by compacting layers of coral to sufficient thickness and density to withstand the traffic. These layers varied from four inches to six inches of coral depending on the expected traffic. Sprinkling with sea water was occasionally required to preserve the surface and ally the dust. In order to obtain access to various sites by boats, the best natural approaches were located, then cleared of obstructions by blasting and dredging with bucket or drag line, followed by marking with properly placed buoys. The buoys were made from used gas or oil drums and anchored with concrete blocks. To facilitate boat or ship loading operations at Eninman, a 54