No. 19131. September 3, 1969. Donald W. Ebbert, Pittsburgh, Pa., James B. Hecht, Michael Yukevich, Jr., Thorp, Reed Armstrong, Pittsburgh, Pa., on brief; Kirby L. Wilson, III, River Rouge, Mich., of counsel, for petitioner. Janet C. McCaa, N.L.R.B., Washington, D.C., Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, Marcel Mallet-Prevost, Asst. General Counsel, Peter Ames Eveleth, Attorneys, N.L.R.B., Washington, D.C., on brief, for respondent. Before PECK, McCREE and