Nos. 19652, 19823. June 3, 1970. Frank H. Stewart, Cincinnati, Ohio, Timothy J. Curtin, Thorley C. Mills, Jr., Taft, Stettinius Hollister, Cincinnati, Ohio, on the brief, for Wald Manufacturing Co. Nancy M. Sherman, N.L.R.B., Washington, D.C., Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, Marcel Mallet-Prevost, Asst. General Counsel, Allen H. Feldman, Atty., N.L.R.B., Washington, D.C., on the brief, for National Labor Relations Board. Before CELEBREZZE, McCREE and