The laboratory building differed from the other buildings of the Project in that it was built of two standard structures placed parallel to each other with a 7 foot corridor between them. This arrangement resulted in a building 55 feet wide, consisting of a central corridor and laboratories 24 feet deep off either side. The building contained eight laboratories separated by metal partitions or wood cabinets, 4 storage and refrigerator room, an office, a dehumidified dark room, and a toilet, All windows were screened, and double screen doors at each end of the corridor afforded ventilation. The corridor extended on past the building as a covered walk to the autopsy building which was an open frame building covered with plastic screening above a corrugated aluminum wainscot. Adjacent to the laboratory building was a greenhouse with a lath roof, screen sides, and duck boards over a concrete slab which extended to the lab building. The greenhouse door was opposite a laboratory entrance, affording access to the greenhouse directly from the laboratory or from the outside. Rather late in the program an infirmary for animals was required. This was provided in a simple wood frame building with no sheathing and with corrugated aluminum siding and roofing. PLUMBING FOR PERSONNEL BUILDINGS Plumbing for the personnel buildings was designed and installed in compliance with the requirements set down in Section IV of the Reconnaissance Report. The pertinent extract from that document is as follows: "PL Materia Separate systems for the distribution of salt water and distilled water are contemplated. This will require separate connections between the main outside lines and certain inside fixtures. Water closet and urinal flush tanks will be connected to salt water service and wash bowls and shower heads to distilled water service, Sewer drain lines will be common to both systems. No duplication of fixtures is involved in this arrangement. All plumbing fixtures located in buildings on Parry and Eniwetok should be of corrosive resisting materials. It is contemplated to utilize vitreous china for lavatories, toilets and urinals, Closet bowls and urinals will consequently be equipped with vitreous china tanks. Due to the use of salt water supply, fittings in flush tanks should all be rubber. Pipe, fittings and fixtures utilizing either distilled water or salt water supply should be of spe- cial Copper Alloy, or other materials capable of resisting the corrosive effect of the spindrift which permeates the atmosphere. Detailed construction specifications applicable to these materials will be the result of additional research and investigation. 5-121