No. 16799. April 3, 1969. James R. Cox, David Shields, Chicago, Ill., for petitioners. Arnold L. Burke, Axelrod, Goodman Steiner, Chicago, Ill., for intervenor, Transport Motor Express, Inc. Sherman Carmell, Sheldon M. Charone, Lawrence J. Weiner, Chicago, Ill., for Intervenor Local 705, Carmell Charone, Chicago, Ill., of counsel. Asher, Greenfield, Gubbins Segall, Chicago, Ill., for Local Union No. 710, Lester Asher, Chicago, Ill., of counsel. Marcel Mallet-Prevost, Asst. Gen. Counsel, Glen M. Bendixsen