No. 25502. March 3, 1969. Rehearing and Rehearing En Banc Denied May 9, 1969. Oliver J. Butler, Jr., Houston, Tex., J.M. Mitchell, New York City, Obediah R. Miller, Houston, Tex., for petitioner. James P. Wolf, Houston, Tex., Dixie, Wolf Hall, by Chris Dixie, Houston, Tex., for intervenor, John R. Tadlock, Gen. Counsel, Oil, Chemical and Atomic Workers International Union, Denver, Colo., of counsel. Marcel Mallet-Prevost, Asst. Gen. Counsel, NLRB, Robert A. Giannasi, Atty., NLRB, Washington, D.C