No. 95-9509. Filed March 28, 1996. Joseph J. Jablonski Jr., Attorney, National Labor Relations Board, Washington, D.C. (Frederick L. Feinstein, General Counsel, Linda R. Sher, Associate General Counsel, Aileen A. Armstrong, Deputy Associate General Counsel, Charles Donnelly, Supervisory Attorney, National Labor Relations Board, Washington, D.C., with him on the brief), for Petitioner. Stephen L. Andrew (D. Kevin Ikenberry with him on the brief), of Stephen L. Andrew Associates, Tulsa, Oklahoma, for