No. 6575. Argued April 9, 1953. Decided May 6, 1953. Edward D. Friedman, Atty., National Labor Relations Board, Washington, D.C. (George J. Bott, Gen. Counsel, David P. Findling, Associate Gen. Counsel, A. Norman Somers, Asst. Gen. Counsel, Marcel Mallet-Prevost, and John Francis Lawless, Attys., National Labor Relations Board, Washington, D.C., on the brief), for petitioner. Whiteford S. Blakeney, Charlotte, N.C. (William E. Anglin, Burnsville, N.C., and Pierce Blakeney, Charlotte, N.C., on the