No. 12986. Argued December 7, 1959. Decided May 13, 1960. Melvin Welles, Washington, D.C. (Stuart Rothman, Gen. Counsel, Thomas J. McDermott, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Alfred Avins, Atty., N.L.R.B., Washington, D.C., on the brief), for petitioner. James L. Price, Philadelphia, Pa. (Richman, Price Jamieson, Philadelphia, Pa., on the brief), for respondent. Before BIGGS, Chief Judge, and KALODNER and STALEY, Circuit Judges. BIGGS, Chief Judge. This is a petition