We took the mine tour this morning and thought it was very interesting. We donned yellow slickers, hard hats, a belt, and a battery operated light, straddled a "train" and went deep into the mine, where we learned a lot about the workings of the mine and about the miners. Our guide was great and talked to us as if we were rookie miners learning the ropes, which we found very effective. We came away with a whole new appreciation of the job. It's 47 degrees in the mine, so dress warmly, especially if you're from Southern California as we are (anything under 55 degrees is close to freezing to us.) Once inside the mine, you'll stand for several minutes for the demonstrations of the equipment, and you'll walk a few hundred feet, then you get back on the train. It all takes about an hour that goes by quickly since it's such a unique experience. We never walked on any stairs at all, but watch your footing for the short walk inside as the ground is a bit uneven.