No. 79-2082. Argued April 29, 1980. Decided July 21, 1980. Penny Pilzer, N.L.R.B., Washington, D.C., for petitioner. Joseph A. Yocum, Yocum Hahn, Evansville, Ind., for respondent. Before WOOD, Circuit Judge, MARKEY, Chief Judge, and CUDAHY, Circuit Judge. Chief Judge Howard T. Markey of the United States Court of Customs and Patent Appeals is sitting by designation. HARLINGTON WOOD, Jr., Circuit Judge. This appeal involves a National Labor Relations Board application for enforcement of its order