Nos. 77-1014, 77-1127. Submitted November 14, 1977. Decided February 16, 1978. Ralph Edwards of Greensfelder, Hemker, Wiese, Gale Chappelow, St. Louis, Mo., for Fruin-Colnon Corp., petitioner. William R. Stewart, Atty., N.L.R.B., Washington, D.C., for N.L.R.B.; Judith P. Wilkenfeld, Atty., N.L.R.B., Washington, D.C., John S. Irving, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Carl L. Taylor, Associate Gen. Counsel, and Elliott Moore, Deputy Associate Gen. Counsel, N.L. R.B., Washington