No. 79-1323. Argued April 15, 1981. Decided October 8, 1981. Ronald J. Santo, Joseph A. Ritok, Jr., Dykema, Gossett, Spencer, Goodnow Trigg, Detroit, Mich., for petitioner. Elliott Moore, Linda Weisel, Deputy Associate Gen. Counsel, Washington, D.C., N.L.R.B., Bernard Gottfried, Detroit, Mich., for respondent. Petition for review from the National Labor Relations Board. Before LIVELY and KEITH, Circuit Judges, and RICE, District Judge. The Honorable Walter H. Rice, Judge, United States District Court