43 C.F.R. § 35.25 Fees.
Title 43 - Public Lands: Interior
The party requesting a subpoena shall pay the cost of the fees and mileage of any witness subpoenaed in the amounts that would be payable to a witness in a proceeding in U.S. District Court. A check for witness fees and mileage shall accompany the subpoena when served, except that when a subpoena is issued on behalf of the Department, a check for witness fees and mileage need not accompany the subpoena.
Title 43: Public Lands: Interior
PART 35—ADMINISTRATIVE REMEDIES FOR FRAUDULENT CLAIMS AND STATEMENTS
§ 35.25 Fees.