It is of course a massive open pit mine and they do indeed scrape off a lot of dirt to get the stuff, low grade that it is. (realclimate.org)
Freeport owns the Grasberg open pit mine in Indonesia, which is not only the world's richest gold mine but also the world's third - largest copper mine. (cabotwealth.com)
The offices of the New York attorney general and inspector general have declined to open investigations into the 2013 constitutional amendment that allowed a private company, NYCO Minerals, to conduct open - pit mining on state land in the Adirondack Mountains. (nystateofpolitics.com)