SDCL § 15-6-26(a): Discovery methods.

Parties may obtain discovery by one or more of the following methods: depositions upon oral examination or written questions; written interrogatories; production of documents or things or permission to enter upon land or other property, for inspection and other purposes; physical and mental examinations; and requests for admission. Unless the court orders otherwise under § 15-6-26(c), the frequency of use of these methods is not limited.