No. 18745. May 21, 1964. Rehearing Denied July 9, 1964. Graydon, Head Ritchey, William A. McKenzie, Leslie A. Meek, Cincinnati, Ohio, for petitioner. Arnold Orman, Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Warren M. Davison and Peter M. Giesey, Attys., N.L.R.B., Washington, D.C., for respondent. Leon Ardzrooni, Neyhart Grodin, San Francisco, Cal., on behalf of amicus curiae-Freight, Construction, General Drivers Helpers, Local 287. Before MADDEN