Nos. 91-2939, 91-3152. Argued June 5, 1992. Decided March 2, 1993. Rick Verticchio (argued), Phelps, Kasten, Verticchio Ruyle, Gillespie, IL, for Livingston Pipe Tube Inc. Charles P. Donnelly, Jr., Richard A. Cohen (argued), Marion L. Griffin, Contempt Litigation Branch, Aileen A. Armstrong, Appellate Court, Enforcement Litigation, Washington, DC, Joseph H. Solien, Kathie M. Grampp, N.L.R.B., St. Louis, MO, for N.L.R.B. Petition for review from the National Labor Relations Board. Before COFFEY and