in the courts of the United States. (c) Enforcement In cases of refusal to obey a subpoena served upon any person under this section, the district court of the United States for any district in which such person is found, resides, or transacts business, upon application by the Attorney General at the request of the Secretary concerned and after notice to such person, shall have jurisdiction to issue an order requiring such person to appear and produce documents before the Secretary concerned. Any failure to obey such order of the court may be punished by such court as contempt thereof and subject to a penalty of up to $10,000 a day. (d) Entry and access Without advance notice and upon presentation of appropriate credentials, the Secretary concerned or any authorized representative thereof— (1) shall have the right of entry to, upon, or through the site of any claim, license, lease, mineral activities, or any premises in which any records required to be maintained under this Act are located