H & N responsibility, proceeded rapidly. Production of drawings for other structures, technical and laboratory facilities for which Users were to supply design criteria, was consistently retarded. This slowness can best be accounted for by the progressive increase in scope of the Project, the corresponding increase in personnel, and the addition of more complex structures, The numerous changes and revisions required the utmost in engineering effort and coordination in order to keep abreast of the construction schedule. In addition to the semi-permanent housing for that portion of the population scheduled to be at the Jobsite for a considerable length of time, it was necessary to provide housing for personnel who would be at the Atoll only during the experiments or for other short times. When information was received that surplus tents were stored in Army supply depots and were available for transfer to AEC, it was decided to use these for short-time personnel. Use of these tents would make possible considerable economy, with no essential sacrifice of health, safety, or comfort, A sample 4-man tent was sent to the Holmes & Narver Los Angeles warehouse, and a frame was designed which could be easily erected and also easily taken down and stored. Bids on this frame and on another less easily reused frame were both too high, and ultimately the frames were "job-built" at a considerable saving. Later, the 4-man tent was frozen and the new 16 x 32-foot standard 8-man "squad tents" were used. Frames were designed from physical measurements and specifications of the tents, and although variations in tent size were common, frames were adjusted to fit the tents. Construction proceeded on this basis, and comfortable and economical housing was obtained. For tent-housed personnel, 100-man aluminum shower and latrine buildings were provided. A total of 344 4-man tents and 289 8—-man tents were used. These tents could normally house 3688 men; but during the peak population period, use of double tier bunks increased tent-housed personnel by 20 per cent. PARRY ISLAND Preliminary planning indicated that approximately 73 prefabricated buildings, with an aggregate floor area of about 152,832 square feet, would constitute the building construction on Parry Island. Actually, the Architectural Department prepared at the Home Office 105 sheets of working drawings covering the architectural design of 69 aluminum buildings and having a total of 163,772 square feet of floor space. Wherever the function of the building would permit, a standard basic building was used without modification. Sometimes, however, the function of the building was somewhat restricted by the limited width and general construction afforded by the building type selected. In 5-106