by TeckXKnight » Tue Feb 22, 2011 12:56 am
There is no longer a separate map instance for any individual mine, is what he means. There are underground layers. Each layer is just rock to be mined out and once in awhile you'll hit a vein (node) of metal that can be mined. If you've prospected tin, that means you've found a vein of tin. If you dig away from that vein or in other places, then you may find other metals too.