No. 18942. Argued March 4, 1965. Decided July 21, 1965. Mr. Theodore J. St. Antoine, Washington, D.C., with whom Messrs. J. Albert Woll and Robert C. Mayer, Washington, D.C., were on the brief, for petitioners. Mr. Gary Green, Atty., N.L.R.B., with whom Messrs. Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, and Marcel Mallet-Prevost, Asst. Gen. Counsel, N.L.R.B., were on the brief, for respondent. Before FAHY, DANAHER and McGOWAN, Circuit Judges. FAHY, Circuit Judge. The