No. 6921. Argued March 14, 1955. Decided April 1, 1955. Irving M. Herman, Attorney, National Labor Relations Board, New York City (David P. Findling, Associate General Counsel; Marcel Mallet-Prevost, Asst. General Counsel, and Elizabeth W. Weston, Attorney, National Labor Relations Board, Washington, D.C., on brief), for petitioner. Arthur E. Pettit, New York City, and C.F. Haynsworth, Jr., Greenville, S.C. (Winthrop, Stimson, Putnam Roberts, New York City, and Haynsworth, Perry, Bryant, Marion Johnstone