No. 74-2114. April 15, 1975. Elliott Moore, Deputy Assoc. Gen. Counsel, NLRB, Joseph E. Mayer, Atty., William R. Stewart, Atty. (argued), Washington, D. C., for petitioner. Duane B. Beeson, San Francisco, Cal. (argued), for respondent. George J. Tichy, II, San Francisco, for intervenor. Before CARTER, WRIGHT and WALLACE, Circuit Judges. OPINION WALLACE, Circuit Judge: The National Labor Relations Board brought this action to enforce its orders against Teamsters, Chauffeurs, Warehousemen Helpers Union