No. 15775. January 3, 1958. S.F. Wadden, Sioux City, Iowa, and Louis L. Corcoran, Sibley, Iowa (Sifford Wadden, Sioux City, Iowa, on the brief), for petitioner. William W. Watson, Atty., N.L.R.B., Washington, D.C. (Jerome D. Fenton, Gen. Counsel, Stephen Leonard, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Owsley Vose, Atty., N.L.R.B., Washington, D.C., on the brief), for respondent. Before GARDNER, Chief Judge, and WOODROUGH and VAN OOSTERHOUT, Circuit Judges. VAN OOSTERHOUT