(a) The board, or any member thereof, or the supervisor is hereby empowered to issue subpoenas for witnesses, to require their attendance and the giving of testimony before the board, and to require the production of such books, papers and records in any proceeding before the board as may be material upon questions lawfully before the board. Such subpoenas shall be served by the sheriff or any other officer authorized by law to serve process in this state. No person shall be excused from attending and testifying, or from producing books, papers and records before the board or a court, or from obedience to the subpoena of the board, or any member thereof, or the supervisor or a court on the ground or for the reason that the testimony or evidence, documentary or otherwise, required of him may tend to incriminate him or subject him to a penalty or forfeiture. However, nothing herein contained shall be construed as requiring any person to produce any books, papers or records, or to testify in response to any inquiry, not pertinent to some question lawfully before such board or court for determination. No natural person shall be subject to criminal prosecution or to any penalty or forfeiture for or on account of any transaction, matter, or thing concerning which he may be required to testify or produce evidence, documentary or otherwise, before the board or court, or in obedience to any such subpoena, but no person testifying shall be exempt from prosecution and punishment for perjury committed in so testifying.

(b) In case of failure or refusal on the part of any person to comply with any subpoena issued by the board, or any member thereof, or the supervisor, or in case of the refusal of any witness to testify or answer to any matter regarding which he may be lawfully interrogated, the judge of the chancery court of the county of the residence of such person, if a resident of Mississippi, or the judge of the chancery court of the county in which the land lies, or any portion thereof, out of which the controversy arises, if such person is not a resident of the State of Mississippi, on application of the board, or any member thereof, or the supervisor, may, in termtime or vacation, issue an attachment for such person and compel him to comply with such subpoena and to attend before the board and produce such documents, and give his testimony upon such matters, as may be lawfully required; and such court shall have the power to punish for contempt as in case of disobedience of like subpoenas issued by or from such court, or for a refusal to testify therein.