No. 8507. Argued March 22, 1962. Decided September 4, 1962. Robert Sewell, Attorney, National Labor Relations Board (Stuart Rothman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Melvin Pollack, Attorney, National Labor Relations Board, on the brief), for petitioner. J.W. Alexander, Jr., Charlotte, N.C. (Ernest W. Machen, Jr., and Blakeney, Alexander Machen, Charlotte, N.C., on the brief), for respondent. Before SOBELOFF, Chief Judge, and