Nos. 17412, 17517. April 17, 1968. William M. Saxton, Detroit, Mich., Robert J. Battista, Butzel, Eaman, Long, Gust Kennedy, Detroit, Mich., Lee B. Brody, Smith, Hirsch Brody, Detroit, Mich., on brief, for petitioner Hughes Hatcher. Jacob Sheinkman, New York City, Sheldon Klimist, Detroit, Mich., Bernard J. Firestone, Detroit, Mich., on brief, for petitioner Central States Joint Board etc. Theodore Sachs, Detroit, Mich., Rothe, Martson Mazey, Sachs O'Connell, Detroit, Mich., on brief, for intervenor