Ross M. Madden, Regional Director, Etc. v. International Organization of Masters, Mates and Pilots of America, Inc.

FINNEGAN, Circuit Judge.

Section 10(Z), of the Labor Management Relations Act, 1 1947, as amended, provides in part relevant here: “Whenever it is charged that any person has engaged in an unfair labor practice within the meaning of paragraph (4) (A), (B) or (C) of section 8(b), the preliminary investigation of such charge shall be made forthwith and given priority over all other cases * * *. If, after such investigation, the officer or regional attorney to whom the matter may be referred has reasonable cause to believe such charge is true and that a complaint should issue, he shall, on behalf…