opinion: Per Curiam.
  The judgment is affirmed. Davis v. Department of Labor, 317 U. S. 249; Kaiser Co. v. Baskin, 340 U. S. 886; Baskin v. Industrial Accident Commission, 338 U. S. 854; Bethlehem Steel Co. v. Moores, 335 U. S. 874.
  Mr. Justice Reed took no part in the consideration or decision of this case.