No. 16966. Argued September 13, 1962. Decided March 7, 1963. Mr. Paul S. Hudgins, Bluefield, W. Va., with whom Mr. Edward A. Martin, Washington, D.C., was on the brief, for petitioner. Mr. Glen M. Bendixsen, Atty., N.L.R.B., of the bar of the Supreme Court of California, pro hac vice, by special leave of court, with whom Messrs. Stuart Rothman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Allison W. Brown, Jr., Atty., N.L.R.B., were on the