communications and air and water transportation. It later developed that Parry was also to accommodate JTF-3 headquarters. The facilities required for the operations of these groups included office and laboratory buildings, work shops, warehouses, and transport installation. Quarters, messing, laundry, and recreational facilities were to be shared by AEC, JIF-3 and H & N, as well as power, water, and communications services. According to the original criteria furnished by AEC, the maximum number of personnel to be accommodated on Parry at any one time was to be approximately 600 persons. The initial planning was undertaken on this basis and a suggested layout was incorporated in the Reconnaissance Report. This planning provided for housing all personnel in semi-permanent aluminum buildings, 200 scientists in small buildings with partitions to provide for one or two men per room, and 400 construction workers in dormitories, 34 men per building. Administration buildings, mess hall, cold storage, power and water plant, shops, and maintenance warehouse were also planned as aluminum buildings. (See Chapter 5.10, Personnel Buildings.) Subsequent expansion of the scope of the scientific program required corresponding expansion of laboratory and associated facilities, as well as a corresponding expansion in personnel accommodations, By July 1949, when Supplement No. 1 to the Reconnaissance Report was issued, the anticipated population for Parry had grown far beyond the original estimate of 600. The increased needs for housing, messing, and other personnel facilities and the increased needs for laboratory buildings, warehouses, freight receiving, transportation, and full handling facilities made necessary a major revision of the layout originally planned. The extent of revision may be seen from a comparison of the two plans, the original from the Reconnaissance Report, Figure 5.7-1, and the revised from Supplement No. 1 to the Reconnaissance Report, Figure 5.7-2. The revised site plan, as approved by AEC, remained firm as to general layout, but many revisions were made in details to accommodate additional personnel. In July of 1949 the Task Force Commander elected to set up his headquarters on Parry. This decision involved approximately 100 additional people, and the planning and construction of a headquarters building for the use of this group as well as the replan- ning of the tent camp area. As late as October 1950, instructions were received from the AEC to provide an addition to the tent camp area to quarter 400 more people. Along with this increase in living quarters, authorization was granted to increase the seating capacity of the mess hall. Because early planning had foreseen some increase in population at this site, the mess hall galley had been built and equipped to handle considerable additional load. It did so satisfactorily until the population increased far beyond that originally contemplated, 5-44