Nos. 18016, 17688, 17956. October 5, 1967. Carrol D. Kilgore, Nashville, Tenn., (Cecil D. Branstetter, Philip M. Carden, Nashville, Tenn., on the brief), for Nashville Bldg. Const. Trades Council. Julius G. Serot, Asst. Gen. Counsel, N.L.R.B., Washington, D.C., (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marvin Roth, Atty., N.L.R.B., Washington, D.C., on the brief), for John J.A. Reynolds, Jr., Frank W. McCulloch and others, and National Labor Relations Board. Wells