No. 10311. Argued May 5, 1966. Decided September 12, 1966. Lawrence M. Joseph, Atty., National Labor Relations Board (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Marcel Mallet-Provost, Asst. Gen. Counsel, and Nancy M. Sherman, Atty., National Labor Relations Board, on brief), for petitioner. John K. Pickens, Alexandria, Va. (Pickens Stevens, Alexandria, Va., on brief), for respondent. Before HAYNSWORTH, Chief Judge, and BOREMAN and J. SPENCER BELL, Circuit Judges. HAYNSWORTH