Nos. 87-7320, 87-7341. Argued and Submitted August 11, 1988. Decided October 3, 1988. Jonathan D. Rosenfeld, Littler, Mendelson, Fastiff Tichy, San Francisco, Cal., for petitioner-cross-respondent. Paul J. Spielberg, N.L.R.B., Washington, D.C., for respondent-cross-petitioner. David A. Rosenfeld, Van Bourg, Weinberg, Roger Rosenfeld, San Francisco, Cal., for Millmens Union, Local 1495, intervenors. On Application for Enforcement of an Order of the National Labor Relations Board. Before TANG, SCHROEDER