PER CURIAM.
This case came on to be heard upon the record and briefs and oral argument of counsel.
On consideration whereof, it is ordered that the order of the district court requiring obedience to subpoena be and hereby is affirmed. Consumers Power Co. v. N.L.R.B., 6 Cir., 113 F.2d 38; Goodyear Tire & Rubber Co. v. N.L.R.B., 6 Cir., 122 F.2d 450, 136 A.L.R. 883; Oklahoma Press Publishing Co. v. Walling, 327 U.S. 186, 209, 214, 66 S.Ct. 494, 90 L.Ed. 614.