Nos. 19492, 19507. December 8, 1967. Messrs. Elliot Bredhoff, Michael H. Gottesman and George H. Cohen, Washington, D.C., were on the motion for petitioner in No. 19,492 and intervenor in No. 19,507. Messrs. Daniel W. Sixbey and Bartholomew Diggins, Washington, D.C., were on the opposition for petitioner in No. 19,507. Mr. Marcel Mallet-Prevost, Asst. General Counsel, National Labor Relations Board, filed an appearance on behalf of respondent. Before BAZELON, Chief Judge, WILBUR K. MILLER, Senior