No. 14960. Argued April 5, 1971. Decided May 28, 1971. Paul J. Spielberg, Atty., N.L.R.B. (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Marjorie S. Gofreed, Atty., N.L.R.B., on brief), for petitioner. Ernest W. Machen, Jr., Charlotte, N.C. (Blakeney, Alexander Machen, Charlotte, N.C., on brief), for respondents. Before BRYAN, WINTER and BUTZNER, Circuit Judges. WINTER, Circuit Judge: Nu-Southern Dyeing Finishing, Inc. and