No. 471, Docket 74-1940. Submitted April 18, 1975. Decided April 28, 1975. Allison W. Brown, Jr. and Stephen D. Quinn, Attys., National Labor Relations Bd., Washington, D.C. (Peter G. Nash, John S. Irving, Patrick Hardin, Elliott Moore, of counsel), for petitioner. Ronald Rosenberg, Robert E. Nagle and Jerry D. Anker, Washington, D.C. (Sidney J. Salzman, Rochester, New York, of counsel), for respondent. Before KAUFMAN, Chief Judge, and LUMBARD and SMITH, Circuit Judges. IRVING R. KAUFMAN, Chief Judge: