No. 89-2795. Argued January 14, 1991. Decided September 4, 1991. Barbara A. Atkin, Judith P. Flower, N.L.R.B., Contempt Litigation Branch, Aileen A. Armstrong, William A. Baudler (argued), N.L.R.B., Appellate Court, Enforcement Litigation, Washington, D.C., Joseph H. Solien, N.L.R.B., Region 14, St. Louis, Mo., for petitioner. Gary A. Wincek (argued), William L. Becker, Laner, Muchin, Dombrow, Becker, Levin Tominberg, Chicago, Ill., Nancy M. Watkins, Wilburn, Suggs Watkins, St. Louis, Mo., for respondent