10 Maiores Buracos feitos pelo homem no Mundo

10 Biggest scars in the earth made ​​by man

10. Kalgoorlie Super Pit

Kalgoorlie The Big Pit DSC04498.JPG
At 3.5 km long, 1.5 km wide and 360 m deep, the Kalgoorlie Super Pit is Australia’s largest open cut gold mine. Located off the Goldfields Highway on the south-east edge of Kalgoorlie-Boulder, Western Australia, the pit is large enough to be seen from outer space! The mine opened in 1893 and produces 28 tonnes of gold per year and is expected to operate until 2017.

9. The Big Hole

Also known as Open Mine or more properly Kimberley Mine, the Big Hole is said to be the largest hole excavated by hand and is located in Kimberley, South Africa. Before it was closed in 1914, 50,000 workers broke their backs using picks and shovels shifting 22.5 million tones of earth, yielding almost 3 tones of diamonds for their country. The Kimberley Mine is 463 meters wide 240 meters deep but only 175 meters of the hole is visible now due to water-accumulation. There is currently an ongoing effort to register the Big Hole as a World Heritage Site.

8. Diavik Diamond Mine
Located in the North Slave Region of the Northwest Territories, Canada, about 300 kilometres north of Yellowknife, the Diavik Diamond Mine produces 8 million carats or 1600 kg of diamonds annually. The mine is gouged into a 20 square km island, 220 km from the Arctic Circle and presents a tremendous site when the surrounding waters freeze over in winter.
The mine also has its own airport that is capable of handling 737s. Its transition from open pit to underground mining is expected to be completed by 2012.

7. Ekati Diamond Mine

North America’s first commercial diamond mine, the Ekati Diamond Mine opened in 1998 and is located near Lac de Gras 310 kilometers north-east of Yellowknife, Northwest Territories, Canada. The mine is accessed by hair-raising ice roads which are even cooler than the one’s for Diavik Diamond Mine because the site for this mine is just 200 kilometers away from the arctic circle compared to 220 for Diavik

6. Grasberg Mine

The Grasberg Mine located in the province of Papua in Indonesia near Puncak Jaya is the largest gold mine, the third largest copper mine and highest open pit mine in the world. It opened in 1973 and currently has 19,500 employees. The mine has produced 610,800 tones of copper and 58 tones of gold in 2006 but is surrounded by a lot of controversies regarding the environmental impact of the work being carried out.

5. Chuquicamata

Also known as Chuqui, the Chuquicamata is a large open pit copper mine in the north of Chile, 215 km northeast of Antofagasta and 1,240 km north of the capital, Santiago. After Bingham Canyon Mine in Utah, USA, it is the 2nd deepest open-pit mine in the world at over 900 meters deep. The mine is also 4.3 km long and 3 km wide. The mine has also produced significant amount of molybdenum. The mine has a production capacity of over 855,000 tones per year.

4. Escondida

Escondida is actually mining company that operates two open pit copper mines in the Atacama Desert, 170 km southeast of Antofagasta in northern Chile. This mine is currently the largest producer of copper in the world with the 2007 production of 1.483 million tons of the metal worth a whopping US$ 10.12 billion!

3. Udachnaya Diamond Mine

This giant hole goes 600 meters deep into the earth’s crust and is located just outside the Arctic circle in Sakha Republic, Russia. The diamonds here were first discovered in 1955. The mine is controlled by Alrosa, Russia’s largest diamond company. Plans are to halt open-pit mining at the site in favor of underground mining in 2010.

2. Mirny Diamond Mine

Discovered days after the Udachnaya Diamond Mine, the Mirny Diamond Mine was an open pit diamond mine located in Mirny, Eastern Siberia, Russia. It is 525 meters deep and has a diameter of 1,200 m. It is also the largest open diamond mine in the world. By the way, the area above it is a no-fly zone because of a few incidents in which helicopters were sucked in by the downward air flow. It produced 10,000,000 carats (2,000 kg) per year before it was closed in 2001.

1. Bingham Canyon Mine

The Bingham Canyon Mine is the deepest open-pit mine in the world and is owned by Rio Tinto Group. Located southwest of Salt Lake City, Utah, USA, in the Oquirrh Mountains, the pit is over 1.2 km deep, 4 km wide and covers an area of 7.7 km². Extraction here began in 1863 and according to Kennecott, it is the world’s largest man-made excavation. It is one of the most productive mines of the world with a production of 17 million tons of copper, 23 million ounces of gold, 190 million ounces of silver, and 850 million pounds of molybdenum as of 2004.


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