No. 77-1414. Submitted November 18, 1977. Decided April 6, 1978. Thomas M. Hanna, St. Louis, Mo., for petitioner. Christopher W. Katzenbach, Atty., N.L.R.B., Washington, D.C., for respondent; John S. Irving, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Carl L. Taylor, Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, and Howard E. Perlstein, Attys., N.L.R.B., Washington, D.C., on brief. Petition to review from the National Labor Relations Board. Before GIBSON, Chief