[Chewbacca]

I would hate to be living above this mine when the ground slumps and forms a sink hole. It just might take half the town with it.

[CanadianBloodAmericanHeart]

I know!! It is really huge, and the Canadian mine is situated right on the Detroit River and freighter after freighter has been loaded up just about everyday for decades right there. Apparently they have some pretty complex tunnel sysytem that would prevent a cave in....lets hope!