No. 21910. March 9, 1966. W.D. Deakins, Jr., Houston, Tex., Vinson, Elkins, Weems Searls, Houston, Tex., of counsel, for petitioner. Marcel Mallet-Prevost, Asst. Gen. Counsel, N.L.R.B., Stephen B. Goldberg, Atty., N.L.R.B., Washington, D.C., Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Linda R. Sher, Attys., N.L.R.B., for respondent. Thomas J. Mitchell, Houston, Tex., Joseph A. Sickles, Bethesda, Md., for Amicus Curiae, Sherman, Dunn Sickles, Washington, D.C., Combs Mitchell