Well the Pebble mine is an open pit mine proposed to be built in Alaska. This mine is supposed to produce gold, copper, and molybendum. Te EPA has ye to release a plan for this site. But one thing about it that is troubling to most Alaska's residents, either native or not, is it is sited at a location that is of particular interest because of the salmon it houses. So what will all of this lad to-- who knows only time will tell. Here is a link where you can read more on this subject. And here is the original article which tipped me off to the project.