John Cooper, Adrian Vanderplank and Jude Vanderplank. Cold at 3°C this afternoon. Plan was to update survey to current bottom and draught test. Surveying started at the bolt station 34/43 at the bottom of Father Duckmas. Jude was tasked with locating suitable stations with John following and measuring. Adrian followed on with can of smoke for later. At the bottom of Pensioners’ Pot, with surveying complete, Jude came up and Adrian went down to test draughts. All seemed to come out. There had been a small slump at the bottom since the previous visit. 1¾ hours. John.