Possible Clues:

• One might dig up old wine, then go off climbing
• One digs putting wine in a lot of milk
• Mostly screw, drinking sparkling wine: one could be at mine
• Digging machine
• Eg archaeologist's short axe to carve ground
• Miner and former Conservative mostly drinking wine
• Old wine, rubbish brought up for digger
• Machine used for quarrying
• Former censor's right to keep Bible — it's used in digs
• Powered machine for digging earth