S.D. Codified Laws § 5-5-15
If the highest offer for any tract of land is satisfactory and the tract is reserved for the bidder, the bidder shall at once deposit with the commissioner the amount specified as the annual rental for the tract. A lease of such tract shall be prepared in duplicate, according to the form prescribed by the commissioner. The lessee shall sign the lease.
If the commissioner approves the lease, the commissioner shall submit the lease to the Governor for approval. If the Governor approves the lease, the Governor shall certify the approval and the commissioner shall sign the lease in duplicate on behalf of the state and file a copy of the lease and the Governor's approval in the commissioner's office. The commissioner shall deliver one copy of the lease to the lessee, and notify the county treasurer of the execution and approval of the lease.
If the commissioner or the Governor disapprove the proposed lease, the commissioner shall return to the bidder the sum deposited.
SDCL 5-5-15