how deep is a copper ore pit

[PHOTOS] Top 10 Largest Open Pit Mines in the World | Top 10 ...

Sep 9, 2015 ... Open-pit mining is one of the most commonly used techniques to ... the Escondida Copper Mine is one of the largest open pit mines in the world. ... 850 meters deep, making it the second deepest open-pit mine in the world.

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Bingham Canyon Mine - Wikipedia

The Bingham Canyon Mine, more commonly known as Kennecott Copper Mine among locals, is an open-pit mining operation extracting a large porphyry copper deposit ... The mine has been in production sin...

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Top 10 deep open-pit mines - Mining Technology

Sep 27, 2013 ... The majority of the deepest open pit operations in the world are copper producing mines. Mining-technology profiles the world's top ten deepest...

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Inside a mile-deep open-pit copper mine after a catastrophic ...

Apr 22, 2013 ... Kennecott Utah Copper, the subsidiary of the mining giant Rio Tinto which runs Bingham Canyon, has a spectacular Flickr set here. Check 'em...

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The worlds deepest, biggest and deadliest open pit mines | LosApos

The worlds biggest open pit iron mine can be found near Hibbing, Minnesota. ... The mine is 2.75 miles (4,5km) across and 0.75 mile (1,2km) deep. ... It was once a thriving copper mine where millions of tons of copper ore, silver, gold, and...

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Copper mining. From ore to copper. - School Science

underground, sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore. open pit, 90% of ore is mined by this...

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Kennecott Utah Copper's Bingham Canyon Mine

a revolutionary open-pit mining method and processing the ore on a large, industrial ... The mine is 2¾ miles across at the top and ¾ of a mile deep. You could...

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Huge Holes in the Earth: Open-Pit Mines Seen From Space | WIRED

Oct 15, 2009 ... This former copper mine operated between 1955 and 1982. ... Today, the 1,780 foot-deep pit is filled with around 900 feet of very contaminated...

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