No. 71-1969. August 11, 1972. Michael E. Abram, N.L.R.B., Washington, D.C., for petitioner; Marcel Mallet-Prevost, Asst. Gen. Counsel, Paul J. Spielberg, N.L.R.B., Washington, D.C., Jerome H. Brooks, director, Region 7, N.L.R.B., Detroit, Mich., on brief. Thomas H. Schwarze, Detroit, Mich., for respondent; Fred B. Schwarze, of Keller, Thoma, McManus, Toppin Schwarze, Detroit, Mich., on brief. Before PHILLIPS, Chief Judge, WEICK, Circuit Judge, and THOMAS, District Judge. Honorable William K. Thomas