No. 19692. Argued March 10, 1966. Decided May 24, 1966. Mr. Mozart G. Ratner, Washington, D.C., for petitioner. Mr. Marcus W. Sisk, Attorney, National Labor Relations Board, with whom Messrs. Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, Marcel Mallet-Prevost, Assistant General Counsel, and Melvin Pollack, Attorney, National Labor Relations Board, were on the brief, for respondent. Mr. Victor A. Sachse, Baton Rouge, La., with whom Mr. Hugh B. Cox, Washington, D.C