No. 20145. November 14, 1963. Ray C. Muller, Fisher Phillips, Atlanta, Ga., for petitioner. Edwin Pearce, John S. Patton, Poole, Pearce Hall, Atlanta, Ga., for International Union of Operating Engineers Local No. 926. Marcel Mallet-Prevost, Asst. Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Seymour Strongin, Atty., N.L.R.B., Stuart Rothman, Gen. Counsel, Elliott Moore, Atty., N.L.R.B., Washington, D.C., for respondent. Before TUTTLE, Chief Judge, and JONES and BELL, Circuit Judges. TUTTLE