No. 79-7053. Argued and Submitted April 16, 1980. Decided September 9, 1980. Lawrence E. Blatnik, Washington, D.C., argued, for petitioner; Elliott Moore, Allison W. Brown, Jr., Washington, D.C., on brief. Kathleen Marie Kelly, San Francisco, Cal., argued, for respondent; Nancy L. Ober, Littler, Mendelson, Fastiff Tichy, William C. Wright, San Francisco, Cal., on brief. On Petition to Review a Decision of the National Labor Relations Board. Before MERRILL and SKOPIL, Circuit Judges, and WYATT, District