No. 78-1716. Submitted March 12, 1979. Decided August 23, 1979. Harold S. Freeman of Dinsmore, Shohl, Coates Deupree, Cincinnati, Ohio, argued and Michael S. Glassman, Cincinnati, Ohio, on appendix and briefs, for petitioner. Edward S. Dorsey, Atty., N.L.R.B., Washington, D.C. argued, and Andrew E. Tranovich, Atty., John S. Irving, Gen. Counsel; John E. Higgins, Jr., Deputy Gen. Counsel; Robert E. Allen, Acting Assoc. Gen. Counsel; and Elliott Moore, Deputy Assoc. Gen. Counsel, Washington, D.C.,