Jeeper hat geschrieben
There is definitely no ladder anywhere and I've hammered-out a lot of passageways. But since I've already saved over my game from when I was outside (stupid), I either have to start all over or I need a way out of the mine. Can you tunnel your way out of the mine? Or is the ladder my only way out? Maybe because I didn't enter the mine through the door, I can't find the ladder. I was at the side of the mine and pressed the 'E' button and then all of a sudden I was inside the mine.
I'd say that for whatever reason your game is using the wrong map for the mine.