nitrogen and hydrogen liquefaction equipment. "B" Building provides offices, laboratories, and machine shops for the cryogenic work, Both of these phases are operated by the National Bureau of Standards under memorandum of understanding with the AEC. "C" Building is -Operated by the Cambridge Corporation and provides space for the assembly and testing of refrigerated transport dewars and the testing of cryogenic parts of TN 2-stage weapons. Cambridge Corporation -- For design, production of refrigerated transport dewars, and cryogenic support services related to thermonuclear program handling equipment on continent and forward area with facilities at Boulder, Colorado, and Cambridge, Massa- chusetts. In addition, the Cambridge Corporation designed, tested, and produced cryogenic parts of TN 2-stage weapons, The present contract continues until January 1, 1955. fee, $573,661. Employees total 236. Total Sandia LASL established a small assembly operation at Sandia Base, Albuquerque, prior to July 1947. In March 1948, it became a formal branch of LASL: the Sandia Laboratory to perform ordnance engineering and assembly. LASL asked in contract negotiations in 1948 for relief, After considerable study and negotiation the AEC obtained Bell System agree- ment to operate Sandia Laboratory. Western Electric formed a wholly-owned subsidiary, Sandia Corporation, and Washington-AEC signed the contract under which Sandia took over operation on November 1, 1949, with 1, 700 University of California employees transferring to its payroll. The contract provides a maximum of contractor authority and a minimum of government control. It provides full reimbursement for all expenses but includes no fee. Mission of Sandia Laboratory -- By mid-1950, Sandia was more a factory than a lab- oratory, much of its resources being devoted to non-nuclear weapon production, assembly, and related procurement, In mid-1952, the emphasis was reversed, in the interest of mak- ing Sandia more a laboratory and less a factory. As of mid-1953, Sandia was responsible » for the inert system, or ordnance phases, of atomic weapons. Its functions included: Studies of the feasibility of new weapons and components, studies of weapons effects, development testing and evaluation of weapons, training military teams, exchange of information with the Armed Forces, and stockpile and inert component quality assurance and surveillance. Sandia Field Office -- Was activiated as an Area Office November 24, 1947, and tenastid established as a Field Office on March 29, 1949, It administers a major contract with Sandia Corporation for operation of Sandia Laboratory and related facilities elsewhere, which became operative November 1, 1949. Ht also supervises engineering and construction and contacts with the Military. The Field Manager is responsible for all matters relating to performance of direct and contract activities; for planning and executing a comprehensive program for the design, development, production, and inspection of weapon components; and for construction of technical, community, and other project facilities. AEC personnel assigned to Sandia in 1947 totaled 4; 119 in 1950; and 175 on July 1, 1953. The mid-1953 staff structure included: Facilities and property management, 18 persons; administrative branch, 38; operations branch, 48; and security, 71. Physical Plant -- The Laboratory and its supporting community occupy 3420.7 acres encompassed within Sandia Base but owned by AEC. Virtually completed by mid-1953 was a Technical Area, $24,467,112 construction program; a community construction, | se