No. 78-1763. Submitted April 17, 1979. Decided May 21, 1979. Rehearing and Rehearing En Banc Denied July 9, 1979. Sara McLaurin Green, Atty., N.L.R.B., Washington, D.C. (argued), John S. Irving, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Robert E. Allen, Acting Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, Kenneth B. Hipp, Deputy Asst. Gen. Counsel, N.L.R.B., Washington, D.C., on brief, for petitioner, N.L.R.B. Davis Biggs, Jr. of Biggs, Casserly, Barnes, Fickie