Crusader Kings 3 Guide to Ore Mines | CK3 Mines
Learn about them with our CK3 Mines Guide. CK3 Mines Guide. Now constructing a mine early one is a hefty price to pay. The investment is well worth it in the long run, though. A mining settlement will cost you 400 gold coins. As I said, is incredibly hefty in the early game, and the construction of the mine takes five years to complete.