No. 77-1255. Submitted April 11, 1977. Decided April 18, 1977. Robert T. Kofman, N.L.R.B., Washington, D.C. for appellant; John S. Irving, Jr., Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Harold J. Datz, Associate Gen. Counsel, Joseph E. Mayer, Asst. Gen. Counsel, Washington, D.C., on the briefs. Frank W. Hylton, Wichita, Kan., for appellee; Kenneth M. Stevens, Michael B. Roach and John F. Reals, Wichita, Kan., on the briefs. Appeal from the United States District Court for the Western