No. 191, Docket 34714. Argued November 11, 1970. Decided February 1, 1971. Michael Barkow, Atty. (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Paul J. Spielberg, Atty., on the brief), for N.L.R.B. Robert E. Wachs, Philadelphia, Pa. (Richard S. Meyer, Wolf, Block, Schorr Solis-Cohen, Philadelphia, Pa., on the brief), for respondent. Before SMITH and FEINBERG, Circuit Judges, and LEVET, District Judge. Of the Southern District