No. 74-1065. Submitted September 13, 1974. Decided May 13, 1975. Paul J. Spielberg, Atty., National Labor Relations Board (Peter G. Nash, Gen. Counsel, John S. Irving, Deputy Gen. Counsel, Patrick Hardin, Associate Gen. Counsel, and Elliott Moore, Deputy Associate Gen. Counsel, National Labor Relations Board, on the brief), for petitioner. Charles E. Hoffhaus, Kansas City, Mo. (Hillix, Brewer Myers, Kansas City, Mo., on the brief), for respondent. George A. Lowe, Olathe, Kan., on the brief, for intervenor