based upon early population estimates, but because of the subsequent large increases in personnel it became necessary to expand the laundry facilities. In December 1950, plans were prepared for an addition of 20 feet to this building to provide space for more bundle racks and for two additional pressing machines, Otherwise, the construction of this building utilized the standard prefabricated aluminum structure with no modification other than the installation of deal windows for deposit and pickup of laundry and the necessary modification of toilet room partitions. In the course of the previous experiments, a control tower had been erected near the central part of the island, and consideration was given to the possibility of erecting the new control building on the existing concrete slab supporting this tower, Further study indicated that this was not feasible and the control building was designed as an entirely new structure and located adjacent to the existing slab and tower. The shell of this building consisted of a 24-foot-long standard aluminum building. By means of wood studs and plywood sheathing, the interior was divided into three areas to provide a control room, observation room, and a dehumidification equipment room. In order to reduce the volume of the air to be dehumidified and thereby the equipment required to dehumidify the control room, a plywood ceiling was installed on wood joists in this room only. In the partition dividing the control room and observation room, a plate glass viewing window was installed. An area of 162 square feet was originally allotted to the control room. After the preparation and approval of plans, however, instructions were received on November 9, 1950, to increase the size of the control room. This was done, without changing the building size, by relocating the control room partition to provide 278 square feet for the control room. This building, along with the existing concrete slab and tower, was enclosed in a small compound formed by an 8-foot chain link fence with access gates. On April 18, 1950, schematic drawings and preliminary criteria were given H & N, with instructions to proceed with the design of the CMR laboratories, These facilities required the use of two separate structures, one of which, by the nature of its function, could be a standard prefabricated aluminum building. The other, because of the equipment to be contained, required a larger building, and a steelframed prefabricated building with aluminum roof and wall sheathing was selected, These structures were placed side by side, about ten feet apart. The intervening space was paved with a concrete slab floor for trucking and access from one building to the other. Over this slab and cantilevered from the steel framed building was a canopy to protect this space from the weather. A similar concrete slab and full length canopy was installed on the opposite side of the larger building to provide a covered storage area, It was required that both buildings be dehumidified and that a rapid air change ventilation system be provided. To accomplish this economically, a small wood framed structure was designed and erected to house the necessary mechanical equipment. This building was located to serve both lab buildings with the minimim of exterior duct work. 5-113