No. 1010, Docket 90-4136. Argued January 31, 1991. Decided April 16, 1991. Paul Hitterman, Washington, D.C. (Howard E. Perlstein, Supervisory Atty., Jerry M. Hunter, Gen. Counsel, Aileen A. Armstrong, Deputy Associate Gen. Counsel, N.L.R.B., Washington, D.C.), for petitioner. Michael Hertzberg, New York City, for respondent. Petition from National Labor Relations Board. Before KEARSE, PRATT and McLAUGHLIN, Circuit Judges. McLAUGHLIN, Circuit Judge: This is a petition by the National Labor Relations