Admin nuggethunting Posted May 30, 2016 Admin Report Share Posted May 30, 2016 Hello All, Here is a very interesting article about the 4th largest Copper Deposit in the World, here in Arizona. The mine is now at 7,000 feet deep and they plan to use a "Block Mining" method, which means mining from the bottom up and allow gravity to work. Read the article and make sure you click on the video - http://www.bloomberg.com/features/2016-arizona-copper-mine/ Quote Link to comment Share on other sites More sharing options...
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