Okla. Stat. tit. 8, § 8-226: Depositions, witnesses and evidence

(a) In any proceeding arising under this act, any member of the

Board, or any interested party, may take depositions as in civil

proceedings and the Board may, on its own motion, and shall, upon

request of any interested party, subpoena witnesses or documentary

evidence, administer oaths, and examine under oath any individual

relative to any hearing or investigation under this act. The

subpoena may be served anywhere in the state and the service thereof

shall not be limited to the county wherein the Board is located.

(b) The subpoena shall have the same force and effect and shall

be served in the same manner as if issued from a court of record.

(c) Witness fees and mileage, if claimed, shall be allowed the

same as for testimony in a court of record. Witness fees and

mileage shall be paid by the Board, or by the person who requests

the hearing.

(d) If any person fails to obey the subpoena, or obeys the

subpoena but refuses to testify when required, the Board shall file

a written report thereof and proof of service of the subpoena with

the clerk of the district court in the county where the person

resides or may be. Thereupon, the court shall forthwith cause the

person to be brought before the court to show cause why he should

not be punished the same as if he had failed or refused to obey a

subpoena from or give testimony in such court.