SDCL § 36-20B-41: Investigations--Probable cause determination--Subpoena power of board.

The board may, upon receipt of a complaint or other information suggesting violations of this chapter or of the rules of the board, conduct investigations in accordance with chapter 36-1C to determine whether there is probable cause to institute proceedings under chapter 1-26 or of this chapter against any person or firm for such violation. However, no investigation under this section may be a prerequisite to the proceedings if a determination of probable cause can be made without investigation. In aid of such investigations, the board or the chair thereof may issue subpoenas to compel witnesses to testify and to produce evidence.