...may be necessary to enable him effectively to discharge his duties under this Act. (b) In the case of contumacy, failure, or refusal of any person to obey...an order, any district court of the United States or of any territory or possession, or the United States District Court for the District of Columbia,...

...may be necessary to enable him effectively to discharge his duties under this Act (b) In the case of contumacy, failure, or refusal of any person to obey...an order, any district court of the United States or of any territory or possession, or the United States District Court for the District of Columbia,...

...of any rule, regulation, or order thereunder, it may in its discretion bring an action in the proper district court of the United States, or the United States courts of any Territory or other place subject to the jurisdiction of the United States, to enjoin such acts or practices and...

...designated by him, shall have the power to hold hearings and to issue orders requiring the attendance and testimony of witnesses and the production of evidence...witnesses in the courts of the United States. In case of contumacy, failure, or refusal of any person to obey such an order, any District Court of the United...

...days prior to hearing. The Secretary shall have the power to issue orders requiring the attendance and testimony of witnesses and the production of evidence...witnesses in the courts of the United States. In case of contumacy, failure, or refusal of any person to obey such an order, any district court of the United...

...shall have the power to iss orders requiring the attendance and testimony of witnesses and the product! of evidence under oath. Witnesses shall be paid the...witnesses in the courts of the United States. In case of contumai failure, or refusal of any person to obey such an order, any district court of t United States...

...designated by him, shall have the power to hold hearings and to issue orders requiring the attendance and testimony of witnesses and the production of evidence...under oath. Witnesses shall be paid the same fees and mileage that are paid witnesses in the courts of the United States. 1n case of contumacy, failure,...

...of hearing. ''' (2) In case of contumacy or refusal to obey a sulipena J7 issued to any person, and district court of the United States -^ or the United States courts of any Territory or possession, or 19 the District Court of the United States for the District of Columbia, within the jurisdiction...

...making his inspections and investigations under this Act the Secretary may require the attendance and testimony of witnesses and the production of evidence...witnesses in the courts of the United States. In case of contumacy, failure, or refusal of any person to obey such an order, any district court of the United...

...designated by him, shall have the power to hold hearings and to issue orders requiring the attendance and testimony of witnesses and the production of evidence...witnesses in the courts of the United States. In case of contumacy, failure, or refusal of any person to obey such an order, any District Court of the United...