No. 6860. Heard June 6, 1967. Decided June 23, 1967. Warren M. Davison, Atty., N.L.R.B., with whom Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Stanley Lubin, Atty., N.L.R.B., were on brief, for petitioner. Louis Chandler, Boston, Mass., with whom Alan S. Miller and Stoneman Chandler, Boston, Mass., were on brief, for respondent. Before ALDRICH, Chief Judge, McENTEE and COFFIN, Circuit Judges. McENTEE, Circuit Judge. In this