hi theres a bunch of mines around franklin north carolina http://www.sheffieldmine.com/ is one mine i have been to, still checking out others hope it helps
There is a place in Pigeon Forge called "The Mine". Its on the left side of the rd. on your way to Gatlinburg from I-40. I've been there years ago. Its one of those places that sells bags of dirt and you go through it at the site. I think the bags of dirt and rocks are brought in from N.C. at one of the mines there. Hope this helps.