61 STAT.] 80TH CONG. , 1sT SESS.-CI . 120-JUNE 23, 1947 or the Board in its discretion at any time prior to the issuance of an order based thereon. The person so complained of shall have the right to file an answer to the original or amended complaint and to appear in person or otherwise and give testimony at the place and time fixed in the complaint. In the discretion of the member, agent, or agency conducting the hearing or the Board, any other person may be allowed to intervene in the said proceeding and to present testimony. Any such proceeding shall, so far as practicable, be conducted in accordance with the rules of evidence applicable in the district courts of the United States under the rules of civil procedure for the district courts of the United States, adopted by the Supreme Court of the United States pursuant to the Act of June 19, 1934 (U. S . C ., title 28, sees. 723-B, 723-C). "(c) The testimony taken by such member, agent, or agency or the Board shall be reduced to writing and filed with the Board. There- after, in its discretion, the Board upon notice may take further testi- mony or hear argument. If upon the preponderance of the testimony taken the Board shall be of the opinion that any person named in the complaint has engaged in or is engaging in any such unfair labor practice, then the Board shall state its finaings of fact and shall issue and cause to be served on such person an order requiring such person to cease and desist from such unfair labor practice, and to take such affirmative action including reinstatement of employees with or without back pay, as will effectuate the policies of this Act: Provided, That where an order directs reinstatement of an employee, back pay may be required of the employer or labor organization, as the case may be, responsible for the discrimination suffered by him: And provided further, That in determining whether a complaint shall issue alleging a violation of section 8 (a) (1) or section 8 (a) (2), and in deciding such cases, the same regulations and rules of decision shall apply irrespective of whether or not the labor organization affected is affili- ated with a labor organization national or international in scope. Such order may further require such person to make reports from time to time showing the extent to which it has complied with the order. If upon the preponderance of the testimony taken the Board shall not be of the opinion that the person named in the complaint has engaged in or is engaging in any such unfair labor practice, then the Board shall state its findings of fact and shall issue an order dismissing the said complaint. No order of the Board shall require the reinstatement of any individual as an employee who has been suspended or dis- charged, or the payment to him of any back pay, if such individual was suspended or discharged for cause. In case the evidence is pre- sented before a member of the Board, or before an examiner or exam- iners thereof, such member, or such examiner or examiners, as the case may be, shall issue and cause to be served on the parties to the proceeding a proposed report, together with a recommended order, which shall be filed with the Board, and if no exceptions are filed within twenty days after service thereof upon such parties, or within such further period as the Board may authorize, such recommended order shall become the order of the Board and become effective as therein prescribed. "(d) Until a transcript of the record in a case shall have been filed in a court, as hereinafter provided, the Board may at any time, upon reasonable notice and in such manner as it shall deem proper, modify or set aside, in whole or in part, any finding or order made or issued by it. "(e) The Board shall have power to petition any circuit court of appeals of the United States (including the United States Court of Appeals for the District of Columbia), or if all the circuit courts of appeals to which application may be made are in vacation, any district 48 Stat. 1064. 28 U. S. C.§ 723b, 723c. Testimony. Back pay. Applicability of rules of decision, etc. Order dismissing complaint, etc. Modification, etc., by Board of finding or order. Petition to court for enforcement of order, etc.