No. 73-3354. March 28, 1975. John H. Stephens (argued), of Cox, Castle, Nicholson Weepes, Los Angeles Cal., for petitioner. Sandra R. McCandless (argued), NLRB, Washington, D.C., for respondent. Appeal from the National Labor Relations Board. Before KOELSCH and KILKENNY, Circuit Judge, and SOLOMON, District Judge. Honorable Gus J. Solomon, Senior United States District Judge for the District of Oregon, sitting by designation. OPINION SOLOMON, District Judge: Associated General Contractors of California