SDCL § 40-32-4: License required for milk plants, transporters, stations, distributors, and persons buying or selling milk products.

Any person engaged in the operation of a receiving station, transfer station, bulk milk pick-up tanker, milk transport tank, plant fabricating single-service articles or milk distributor in South Dakota, or any person buying milk produced in South Dakota, or any person selling milk, any milk product, or raw milk for human consumption, shall, before beginning business, obtain from the secretary a license for each place of business owned or operated by the person in South Dakota, and for each milk distributor or milk plant buying or selling milk or any milk product in South Dakota.