No. 74-1432. Argued January 15, 1975. Decided April 28, 1975. Walter S. Davis, Milwaukee, Wis., for petitioner. Elliott Moore, Deputy Associate Gen. Counsel, John D. Burgoyne and Roger T. Brice, Attys., N.L.R.B., Washington, D.C., for respondent. Petition for review from the National Labor Relations Board. Before CLARK, Associate Justice. and CUMMINGS and TONE, Circuit Judges. Associate Justice Tom C. Clark of the Supreme Court of the United States (Retired) is sitting by designation. PER CURIAM