No. 16906. June 3, 1969. Rehearing Denied July 15, 1969. Frederic D. Anderson, Herbert C. Snyder, Jr., Barnes, Hickam, Pantzer Boyd, Indianapolis, Ind., for petitioner. Marcel Mallet-Prevost, Asst. Gen. Counsel, Thomas Silfen, Atty., Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Assoc. Gen. Counsel, Michael N. Sohn, John E. Nevins, Attys., N.L.R.B., Washington, D.C., for respondent. Before CASTLE, Chief Judge, FAIRCHILD, Circuit Judge, and HOFFMAN, District Judge. Judge Hoffman is sitting by designation