No. 26338. November 21, 1969. Rehearing Denied and Rehearing En Banc Denied January 12, 1970. Theo F. Weiss, Clemens, Knight, Weiss Spencer, San Antonio, Tex., for petitioners. Marcel Mallet-Prevost, Asst. Gen. Counsel, N.L.R.B., Washington, D.C., Clifford Potter, Director, Region 23, N.L.R.B., Houston, Tex., Joseph A. Yablonski, Atty., N.L.R.B., Washington, D.C., Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, William Wachter, Attorney, N.L.R.B., for respondents. Fred