Well, one is in Arizona and one si on sommerset island. So logistics is ONE issues in comapring these. For example - how many oil refineries are there is Arizona vs Sommerset island?
ONE of thes deposite is a porphory copper deposit, the other is calcopyrite copper deposit. If yuo look at how yuo recover copper from the different ore types yuo will quickly undersatdn why a mine in one place costs what it does at the one on Somomerset island costs at least $500M.
ONe uses a cyinide spray foam on piles of stacked ore; the other uses a process plant (or 7-12 DSO's if yuo are still pushing that nonsense) and a gravity seperation.
Now that we have all learned something, who is everybody giong to listen to for advice - Schocor or cut and paste GOldy. Exactly.