Site Planning. Preliminary site planning has been given consideration in connection with this Report, and several Plates are included which show in general an arrangement of buildings and facilities for Parry Island, Eniwetok Island and each of the Experiment Islands. This planning has been based upon the use of the prefabricated aluminum structure previously discussed, and tc provide for six hundred personnel on Parry Island, consisting of two hundred Scientists, and four hundred assistants ami workmen in the various trades, including construction and repair, six hundred Military personnel on Eniwetok, in the proportion of two hundred Officers and four hundred enlisted men, and two hundred on each of the Experiment Islands divided as follows: Fifty Scientists and Officers, and one hundred and fifty workmen and enlisted men. The number and classification of personnel is an assumption based upon preliminary thoughts of the Laboratory, and these quantities as well as the ratio of different classifications are subject to change at any time. In fact use of the aluminum structure lends itself very readily to great flexibility, inasmuch as the length of buildings can be varied easily in increments of three feet, and the number of buildings can readily be increased or decreased as requirements indicate. Parry Island. This island is planned as the civilian headquarters island and inasmuch as there is no usable housing on the island, it is possible to plan the general arrangement of all facilities without regard to existing structures, ex=cept in a few locations which do not materially effect the general arrangement. There are a number of warehouses on Parry Island which at the present time are in relatively good condition, and it is planned to use these as long as they are fit for use. struction. These warehouses will be useful during the early periods of conThe general arrangement of housing quarters is toward the ocean side which is the windward side. Buildings for housing personnel are oriented to take the greatest advantage of the breeze, which is quite constant in direction. Iv - 17