No. 77-2240. Argued May 22, 1978. Decided August 9, 1978. Michael Murchison, N.L.R.B., Washington, D.C., for petitioner. Arthur D. Rutkowski, Evansville, Ind., for respondent. Before PELL and WOOD, Circuit Judges, and HARPER, Senior District Judge. Senior United States District Judge Roy W. Harper of the Eastern and Western Districts of Missouri is sitting by designation. PELL, Circuit Judge. The sole issue in this application for enforcement is whether the National Labor Relations Board (Board)