Mendip Cave Rescue held a rescue practice for the Stone Mine members in Swwan Mine on Saturday 5th March 2022. This was a practice aimed more at the stone mines area, concentrating on the command & control and communication aspects of a search of a stone mine for a missing person. Two underground search teams entered the mine and were tasked with searching different areas of the mine, and reporting any casualties found to an underground control point. Communications between this underground control point and the surface were established, using both Cave Link for text messages and Heyphones for voice, along with the "micro Heyphone" kindly loaned to us by Ian Cooper from Midlands Cave Rescue Organisation. All simulated casualties were found and information about these casualties was successfully communicated back to the surface control point.