Tins, LASL had not been able to expand its personnel as rapidly as had been previously planned. That fact, together with others that have been mentioned, contributed to a growth in the number of vacancies in family housing to a point permitting replacement of temporary housing to be started by demolishing some of the temporary housing and rebuilding on the same site, In this way it may be possible to avoid overbuilding inasmuch as the total number of family housing units available will never be increased beyond what is available at the start of the program until the last increment, which is planned to be built in 1957. Each year before that time the housing requirements can be restudied in the light of changes in the mission or program at Los Alamos. If changes occur which indicate a leveling off or reduction in employment at Los Alamos, the program of replacement of temporary housing can be adjusted accordingly. . Likewise, by being able to build at least some of the replacement housing on the site of the area occupied by the temporary housing, it will be possible to avoid having a "blight" area, Charges for Use of Public Buildings In line with the objective of reducing the "subsidy" for the operation of the community and following the principle that "free"services to individuals or small groups should be eliminated insofar as possible, charges were established for the use of space in public buildings. It was felt that a nominal charge that might cover at least some, if not all, of the out-of-pocket expenses for janitorial services, etc., would be equitable and that such charges would not interfere unduly with the activities being carried on by the groups. It had been the practice to allow the use of this space by these groups on verbal under- standings, This lax arrangement did not engender a feeling of obligation or responsibility on the part of the using group and did not protect the Government in the event of an accident. A license agreement form was devised and put into effect October 1, 1952, simultaneously with a nominal charge for the use of space. Los Alamos Commercial Activities There are now forty-one major business concessions which pay a fixed percentage of their gross sales as rent, They occupy primary space in permanent buildings which were constructed for commercial purposes, except for the canteen which is located in the TA-3 Shop Building and two vending machine concessions which have machine locations but do not have exclusive occupancy of any space, Percentage concessions include the following: garage, supermarket (3), motion picture theater (2), barber shop (2), furniture store, wr vena drug store (2), dry cleaning shop, men's & boys! clothing store, appliance store, shoe store, service station (2), watch repair & jewelry shop, launderette, beauty shop, bowling alley & pool parlor, flower shop, canteen (Shop Area), shoe repair shop, jewelry & gift shop, hardware store, book& stationery store, bakery & delicatessen, photo shop, laundry & dry cleaning agency, department store, tot shop, variety store, sporting goods store, curio shop, radio & TV sales & service, vending machine (soft drinks), vending machine (tobacco & 4 confections, package store, ladies ready-to-wear, and soda bar. In addition to the 41 percentage concessions, ground floor space in permanent buildings is occupied by a bank, Western Union, newspaper, veterinary hospital, and radio station on a flat monthly rental basis. Al The principal changes in percentage concessions in the past three years have been the addition of a supermarket, drug store, service station, theater, barber shop, package store DAR i joy 99