No. 73-1512. Submitted January 14, 1974. Decided September 3, 1974. Rehearing Denied November 7, 1974. Edward M. Glennon, Minneapolis, Minn., for petitioner. John D. Burgoyne, Atty., N.L.R.B., Washington, D.C., for respondent. Theodore W. Kheel, Battle, Fowler, Lidstone, Jaffin, Pierce Kheel, New York City, for intervenor. Petition for review of an order from the National Labor Relations Board. Before MATTHES, Senior Circuit Judge, HEANEY, Circuit Judge, and SMITH, Senior District Judge. TALBOT SMITH