No. 85-1548. Submitted April 16, 1986. Decided November 26, 1986. Douglas P. Seaton, Minneapolis, Minn., for petitioner. Paul Spielberg of the National Labor Relations Board, Washington, D.C., for respondent. Appeal from the National Labor Relations Board. Before JOHN R. GIBSON, Circuit Judge, SWYGERT, Senior Circuit Judge, and FAGG, Circuit Judge. The HONORABLE LUTHER M. SWYGERT, Senior Circuit Judge for the United States Court of Appeals for the Seventh Circuit, sitting by designation. JOHN R.