No. 15175. August 26, 1955. Frederick U. Reel, National Labor Relations Board, Washington, D.C. (George J. Bott, Gen. Counsel, David P. Findling, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Robert H. Hurt, Washington, D.C., with him on the brief), for petitioner. John J. Manning, Kansas City, Mo., for respondent. Albert J. Goldberg, Washington, D.C., filed brief for Central States Drivers Council as amicus curiae. Before SANBORN, JOHNSEN, and VOGEL, Circuit Judges. JOHNSEN