No. 94-2929. Submitted January 13, 1995. Decided May 16, 1995. Donald W. Jones, Springfield, MO, argued, for respondent. Margaret Lukes of the NLRB, Washington, DC, argued for petitioner. Appeal from the National Labor Relations Board. Before LOKEN and MORRIS SHEPPARD ARNOLD, Circuit Judges, and JONES, Senior District Judge. The HONORABLE JOHN BAILEY JONES, Senior United States District Judge for the District of South Dakota, sitting by designation. LOKEN, Circuit Judge. The National Labor Relations