No. 18160. September 8, 1970. Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Allison W. Brown, Jr., Ronald Grenbrg, Attorneys, N.L.R.B., Washington, D.C., on brief for petitioner. Varnum, Riddering, Wierengo Christenson, Eugene Alkema, Gary P. Skiner, Grand Rapids, Mich., on brief for respondent. Before PHILLIPS, Chief Judge, and EDWARDS and CELEBREZZE, Circuit Judges. CELEBREZZE, Circuit Judge. This is a petition to review and