Farrell stated in his report to King Leopold: It will be utterly impossible to exhaust your bodies of oxidized ores during this century … The quantity of copper you can thus produce is entirely a question of demand—the mines can supply any amount. You can make more copper and make it much cheaper than any mines now working. I believe your mines will be the source of the world’s future supply of copper.4 Almost all that copper had cobalt attached to it, although it would take another 110 years before the rechargeable battery revolution would make the cobalt ten times more valuable than the
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