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)
The Pebble Mine, designed to be the most massive open pit mine in history, would endanger and compromise these runs, and could destroy them permanently. (dotearth.blogs.nytimes.com)
This may open up toll treating options for Hammer to investigate low - cost, start - up satellite open pit mining operations in the region. (businessnews.com.au)