No. 4588. October 16, 1951. Argued by Marshall J. Seidman, Washington, D.C. (George J. Bott, General Counsel, David P. Findling, Associate General Counsel, A. Norman Somers, Asst. General Counsel, and Frederick U. Reel, all of Washington, D.C., with him on brief), for petitioner. Walter A. Calderwood and Hughes Burnes, all of Dover, N.H., submitted on memorandum, by leave of Court, for respondents. Before MAGRUDER, Chief Judge, and WOODBURY and HARTIGAN, Circuit Judges. PER CURIAM. The National Labor