No. 91-3731. Argued September 22, 1992. Decided June 21, 1993. Jill A. Griffin (argued), N.L.R.B., Contempt Litigation Branch, Washington, DC, Elizabeth Kinney, N.L.R.B., Chicago, IL, Aileen A. Armstrong, Collis Suzanne Stocking, Nancy B. Hunt, N.L.R.B., Appellate Court, Enforcement Litigation, Washington, DC, for petitioner. Gilbert A. Cornfield, Cornfield Feldman, William L. Becker, Michael Klupchak (argued), Laner, Muchin, Dombrow, Becker, Levin Tominberg, Chicago, IL, for respondent. Petition