No. 79-1987. Submitted June 10, 1980. Decided September 18, 1980. Hugo Swan, Jr., Fort Smith, Ark., for petitioner. Susan Lynn Mandle, Atty., Washington, D.C., for respondent, respondent-intervenor. Petition for review of an order from the National Labor Relations Board. Before HEANEY and ARNOLD, Circuit Judges, and OVERTON, District Judge. The Hon. William R. Overton, United States District Judge for the Eastern District of Arkansas, sitting by designation. OVERTON, District Judge. This case is