No. 71-1333. Heard February 23, 1972. Decided March 9, 1972. Allison W. Brown, Jr., Atty., Washington, D.C., with whom Peter G. Nash, Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, and Madge F. Jefferson, Atty., Washington, D.C., were on brief, for petitioner. Arthur J. Flamm, Boston, Mass., with whom Flamm, Mason Paven, Boston, Mass., was on brief, for respondent. Before ALDRICH, Chief Judge, McENTEE and COFFIN, Circuit Judges. ALDRICH, Chief Judge. The National Labor Relations Board seeks