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.
Tenn. R. Civ. P. 26.01
As amended July 1, 1979, and by order entered January 31, 1984.