Nos. 71-1021, 71-1030. March 1, 1972. Charles E. Sykes, Lincoln, Neb., for petitioner Wilkinson Mfg. Co. William A. Jolley, Kansas City, Mo., for petitioner United Steelworkers. Howard C. Hay, Atty., N.L.R.B., Washington, D.C., for respondent. Appeal from Petitions for review from the National Labor Relations Board. Before VAN OOSTERHOUT, BRIGHT and STEPHENSON, Circuit Judges. BRIGHT, Circuit Judge. This labor-management controversy stems from the efforts of United Steelworkers of America, AFL-CIO