I don't think it ever crossed the owners' minds to demolish the place; rather, I think they thought of a way to make profitable a place that would irremediably cease to produce, given the limited nature of the veins of any kind.
So it is, seeing everything live, you understand the processes and you also value what has taken millions of years for the planet earth to share its beauties with the human being.
I appreciate your appreciation of our work.
Regards