No. 73-1098. Argued October 16, 1973. Decided March 5, 1974. Joseph Oertel, N.L.R.B., for petitioner; Peter G. Nash, Gen. Counsel, John S. Irving, Deputy Gen. Counsel, Patrick Hardin, Associate Gen. Counsel, Elliott Moore, Asst. Gen. Counsel, Allison W. Brown, Jr., Attys., N.L.R.B., Washington, D.C., on brief. Richard L. Barnes, Tulsa, Okl., for respondent; Charles A. Kothe, Mary T. Matthies, Kothe Eagleton, Inc., Tulsa, Okl., on brief. Before PHILLIPS, Chief Judge, WEICK, Circuit Judge, and O'SULLIVAN