No. 71-1849. Argued May 22, 1972. Decided December 1, 1972. Mr. Jonathan G. Axelrod, Atty., N.L.R.B., with whom Mr. Marcel Mallet-Prevost, Asst. Gen. Counsel, and Mrs. Nancy M. Sherman, Atty., N.L.R.B., were on the brief, for petitioner. Mr. Michael E. Jaffe, Washington, D.C., for respondent. Messrs. Allen G. Siegel and Lee M. Modjeska, Washington, D.C., were on the brief for respondent. Before WILBUR K. MILLER, Senior Circuit Judge, and McGOWAN and MacKINNON, Circuit Judges. MacKINNON, Circuit Judge: