El Teniente mineLargest underground mine in the world. 2.5 billion pounds average grade .81% copper, tiny bit of Moly to go with it. Mining to 1800 meter depth.
https://www.saimm.co.za/Conferences/RockSlopes/421-434_Olavarria.pdf
https://www.laht.com/article.asp?ArticleId=356215&CategoryId=14094
These long intercepts indicate that there is much more copper in this area. just a matter of drilling and putting the puzzle together. Eventually they will figure out the best way to get all of this out of the ground. They may discover 3 or 4 more deposits in the area.