No. 22186. Argued June 13, 1969. Decided November 5, 1969. Mr. Elliott C. Lichtman, Washington, D.C., with whom Messrs. Joseph L. Rauh, Jr., John Silard, Washington, D.C., Stephen I. Schlossberg, Detroit, Mich., and George Kaufmann, Washington, D.C., were on the brief, for petitioner. Mr. Roger L. Sabo, Attorney, National Labor Relations Board, with whom Messrs. Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, Marcel Mallet-Prevost, Asst. General Counsel, and Herman