SDCL § 21-25A-14: Hearing by all arbitrators--Continuation when arbitrator ceases to act.

Unless otherwise provided by the agreement, the hearing shall be conducted by all the arbitrators but a majority may determine any question and render a final award. If, during the course of the hearing, an arbitrator for any reason ceases to act, the remaining arbitrator or arbitrators appointed to act as neutrals may continue with the hearing and determination of the controversy.