S.D. Codified Laws § 49-43-22

Upon the return of any storage receipt by a receipt holder, a scale ticket for open storage grain, or a scale ticket for grain in a grain bank account, to the public grain warehouse issuing the receipt or scale ticket, and the tender of all proper charges on the grain represented by the receipt or scale ticket, the grain or an equal quantity of the same grade, kind and quality shall immediately be delivered to the holder of the receipt or scale ticket as rapidly as due diligence, care, and prudence justify.