PUBLIC LAWS-CH. 120-JUNE 23, 1947 Short title. Unfair labor prac- tice. Ante, pp. 140,141. Certification of rep- resentatives, etc. 49 Stat. 453. 29U..c..159. Ante, p. 143 . Amendments made by Title I. Ante, p . 139. "SEC. 17. This Act may be cited as the 'National Labor Relations Act'." EFFECTIVE DATE OF CERTAIN CHANGES SEC. 102. No provision of this title shall be deemed to make an unfair labor practice any act which was performed prior to the date of the enactment of this Act which did not constitute an unfair labor practice prior thereto, and the provisions of section 8 (a) (3) and section 8 (b) (2) of the National Labor Relations Act as amended by this title shall not make an unfair labor practice the performance of any obligation under a collective-bargaining agreement entered into prior to the date of the enactment of this Act, or (in the case of an agreement for a period of not more than one year) entered into on or after such date of enactment, but prior to the effective date of this title, if the performance of such obligation would not have constituted an unfair labor practice under section 8 (3) of the National Labor Relations Act prior to the effective date of this title, unless such agree- ment was renewed or extended subsequent thereto. SEC. 103. No provisions of this title shall affect any certification of representatives or any determination as to the appropriate collective- bargaining unit, which was made under section 9 of the National Labor Relations Act prior to the effective date of this title until one year after the date of such certification or if, in respect of any such certifi- cation, a collective-bargaining contract was entered into prior to the effective date of this title, until the end of the contract period or until one year after such date, whichever first occurs. SEC. 104. The amendments made by this title shall take effect sixty days after the date of the enactment of this Act, except that the authority of the President to appoint certain officers conerred upon him by section 3 of the National Labor Relations Act as amended by this title may be exercised forthwith. TITLE II-CONCILIATION OF LABOR DISPUTES IN IN- DUSTRIES AFFECTING COMMERCE; NATIONAL EMER- GENCIES SEC. 201. That it is the policy of the United States that- (a) sound and stable industrial peace and the advancement of the general welfare, health, and safety of the Nation and of the best interests of employers and employees can most satisfactorily be secured by the settlement of issues between employers and employees through the processes of conference and collective bar- gaining between employers and the representatives of their employees; (b) the settlement of issues between employers and employees through collective bargaining may be advanced by making avail- able full and adequate governmental facilities for conciliation, mediation, and voluntary arbitration to aid and encourage employ- ers and the representatives of their employees to reach and maintain agreements concerning rates of pay, hours, and working conditions, and to make all reasonable efforts to settle their differ- ences by mutual agreement reached through conferences and collective bargaining or by such methods as may be provided for in any applicable agreement for the settlement of disputes; and (c) certain controversies which arise between parties to colective-bargaining agreements may be avoided or minimized by making available full and adequate governmental facilities for furnishing assistance to employers and the representatives of their employees in formulating for inclusion within such agreements provision for adequate notice of any proposed changes in the 152 [61 STAT.