Nos. 97-70646, 97-70841 Argued and Submitted April 13, 1998 — San Francisco, California. Filed June 22, 1998 Petition for Review and Cross Application for Enforcement of a Decision of the National Labor Relations Board. NLRB No. 32-CA-13189 COUNSEL Allen J. Gross, Mitchell, Silberberg Knupp, Los Angeles, California, for the petitioner-cross-respondent. James S. Scott A. Donald Rhoads, National Labor Relations Board, Oakland, California; Aileen A. Armstrong, Office of the General Counsel, National