No. 74-3226. March 16, 1976. Elliott Moore, Deputy Associate Gen. Counsel., N.L.R.B. (argued), Washington, D.C., for petitioner. Victor J. Van Bourg (argued), of Levy, Van Bourg Hackler, San Francisco, Cal., for respondent. Before BROWNING and SNEED, Circuit Judges, and SMITH, District Judge. The Honorable Russell E. Smith, United States District Judge for the District of Montana, sitting by designation. OPINION RUSSELL E. SMITH, District Judge. An enforced order required the Union to make one Castor