Nos. 16006, 16076. April 27, 1965. Eugene L. Hartwig, Detroit, Mich., for General Motors, Aloysius F. Power, Gen. Counsel, Detroit, Mich., on the brief, Harry S. Benjamin, Jr., K. Douglas Mann and George Cherpelis, Detroit, Mich., of counsel. Marion Griffin, N.L.R.B., Washington, D.C., for N.L.R.B., Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Stephen Goldberg, Atty., N.L.R.B., Washington, D.C., on the brief. Kenneth M. Schwartz