No. 79-1645. Argued August 21, 1980. Decided December 8, 1980. H. Lane Dennard, Jr., Greenville, N.C. (Jonathan P. Pearson, Ogletree, Deakins, Smoak, Stewart Edwards, Greenville, N.C., on brief), for petitioner. Lafe E. Solomon, N.L.R.B., Washington, D.C. (William A. Lubbers, 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, Washington, D.C., on brief),