. "Sustainable mining" . . . . . . . . . . . . . . . . "Sustainable mining" . . "\"The history of Butte, Montana is forged in the not so environmentally friendly practices of the Copper Kings of the early 20th Century. Now the city leaders and residents are pushing to clean up the sins of the past and also educate those who wish to get into the field of mine reclamation at Montana Technical Institute. We go on top and hundreds of feet below the city to get all the angles\"--Container." . . .