No. 74-1319. Submitted November 11, 1974. Decided December 26, 1974. Rehearing and Rehearing En Banc Denied January 24, 1975. Aileen Armstrong, Atty., National Labor Relations Board, Washington, D.C., for petitioner. Gale E. Fisher, Sioux Falls, S. D., for respondent. Before VAN OOSTERHOUT, Senior Circuit Judge, HEANEY, Circuit Judge, and MEREDITH, Chief District Judge. JAMES H. MEREDITH, Chief Judge, Eastern District of Missouri, sitting by designation. HEANEY, Circuit Judge. The National Labor