RE:A potential game changer Yes it is helpful , however hard to get away from the billions in capex to uncover the find and pay workers a living wage .If we want third world mine workers becoming middle class consumers we need at least $3 copper . Development costs have skyrocketed from just 10 years ago . Also political blockades , unrest(congo) , and NIMBYism have caused far more trouble than inability to find new deposits in my opinion . I can also think of more than 5 large deposits awaiting development but still years away due to environmental reasons .