934 62 Stat. 1028. Public-utility in- stallations. Availability of ap- propriation. Contract authority. Appropriation au- thorized. Post, p. 975. PUBLIC LAWS-CHS. 760, 764-OCT. 26, 27, 1949 [63 STAT. (5) Install in the new tunnel duplicate steam supply lines and a condensate return line and necessary auxiliary equipment to supply steam for heating the buildings now being supplied by the section of the tunnel to be abandoned and the additional office building authorized by Public Law 785, Eightieth Congress; and install in the new tunnel chilled water lines for supplying air-conditioning refrigeration from the Capitol Power Plant for the First Street wing of the Senate Office Building, the United States Supreme Court Building, the Library of Congress Annex, and the additional office building authorized by Public Law 785, Eightieth Congress, with provision for future service lines to the main Library of Congress building. (6) Increase the capacity of the refrigeration plant at the Cap- itol Power Plant from four thousand eight hundred tons to approxi- mately eight thousand eight hundred tons of refrigeration by the installation of two or more centrifugal compressor units, complete with pumps and necessary auxiliary equipment and connected to the chilled water-distribution system; install a cooling tower at the Capitol Power Plant site in replacement of the existing river pump- house to supply cooling water for the refrigeration plant; and install piping, valves, transformer substation and electrical equipment, and all other necessary incidental items. SEC. 2 . The Architect of the Capitol, under the direction of the House Office Building Commission, is hereby authorized and directed to make arrangements for such public-utility installations as may be necessary for the supplying of the electrical energy to be purchased under the authority of this Act. The appropriation for the fiscal year ending June 30, 1950, for expenses in connection with the maintenance and operation of the Capitol Power Plant shall be available for purchasing such electrical energy. SEC. 3. The Architect of the Capitol, under the direction of the House Office Building Commission, is hereby authorized and directed to enter into such contracts and to make such expenditures for labor, materials, equipment, personal and other services, structural and other changes, and other items and purposes, as may be necessary to carry out the provisions of this Act. In employing the engineering services for the project herein authorized, competition shall be restricted to not less than three competent firms of engineers. SEC. 4. There is hereby authorized to be appropriated a total amount not to exceed $16,446,000 to carry out the provisions of this Act, and the Architect of the Capitol, under the direction of the House Office Building Commission, is authorized to obligate such total amount, prior to the actual appropriation of the full amount thereof, after an appropriation of any part of such total amount shall have been made. Approved October 26, 1949. [CHAPTER 764] ANT ACT October 27, 1949 IS.1578] TO authorize the Secretary of the Army to proceed with construction at stations [Public Law 414] of the Alaska Communication System. Alaska Communi- cation System. Construction au- thorized. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the Secretary of the Army is hereby authorized to establish or develop installations and facilities by the construction, installation, or equipment of tempo- rary or permanent public works, including buildings, facilities, appur- tenances, and utilities, at stations of the Alaska Communication System at the following locations:
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