Nos. 92-3911, 93-1218. Submitted October 11, 1993. Decided August 31, 1994. James K. Pease, Jr., Madison, WI, argued (James K. Pease, Jr. and Douglas E. Witt, on the brief), for petitioner/cross-respondent. Marilyn O'Rourke, Washington, DC, argued (Frederick C. Havard and Marilyn O'Rourke, and Gen. counsel Jerry M. Hunter, Yvonne T. Dixon, Nicholas E. Karatinos and Aileen A. Armstrong, on the brief), for respondent/cross-petitioner, NLRB. Stephen D. Gordon, Minneapolis, MN, argued (Stephen D. Gordon