No. 86-1182. Argued February 10, 1987. Decided May 19, 1987. David M. Silberman, with whom Harry Huge, Gary K. Harris, Allison Beck and Laurence Gold, were on brief, for petitioner. Angelo V. Arcadipane, Washington, D.C., also entered an appearance for petitioner. Marc B. Seidman, Atty., N.L.R.B., with whom Robert E. Allen, Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, John H. Ferguson and Barbara A. Atkin, Attys., N.L.R.B., Washington, D.C., were on brief, for respondent