No. 87-1370. March 10, 1989. Charles W. Ellis of Lawrence, Ellis Harmon, P.A., Oklahoma City, Okl., for petitioners. Michael F. Messitte (Barbara A. Atkin, Supervisory Atty., L. Pat Wynns, Atty., Rosemary M. Collyer, General Counsel, John E. Higgins, Jr., Deputy General Counsel, Robert E. Allen, Associate General Counsel, and Elliott Moore, Deputy Associate General Counsel, of the N.L.R.B., Washington, D.C., on the brief), for respondent. Petitioned for review from the National Labor Relations Board