How deep are the deepest mines in the world?
4.0 km
List of deepest mines
| Rank | Name of mine | Depth |
|---|---|---|
| 1 | Mponeng Gold Mine | 4.0 km (2.5 mi) |
| 2 | TauTona Mine | 3.9 km (2.4 mi) |
| 3 | Savuka Gold Mine | 3.7 km (2.3 mi) |
| 4 | East Rand Mine | 3.585 km (2.228 mi) |
What is the largest underground mine in the world?
El Teniente
Part of state-run Codelco, 55 kilometers east of Rancagua, El Teniente is the world’s largest underground mine. Its more than 2,400 kilometers of tunnels yield more than 400,000 metric tons of refined copper per year.
How deep is the deepest diamond mine?
Deepest Diamond Mines on Earth
- Jwaneng – 625 meters. Jwaneng mine is one of the most valuable diamond mines in the world, and also the very deepest.
- Koffiefontein – 620 meters.
- Udachnaya Pipe – 600 meters.
- Argyle – 600 meters.
- Mir – 525 meters.
- Venetia – 450 meters.
- Diavik – 400 meters.
- Liqhobong – 393 meters.
How far underground is gold found?
Placer gold can be found at the surface down to depths of tens or hundreds of feet. Lode gold, which is gold retrieved from crushed rock, is found where the vein in the rock is. The deepest gold mine in the world is more than 2,5 miles deep.
Why are deep mines so hot?
Deep underground mines are “hot” work sites because of the heat from the rock itself. Ground water flowing through hot rock formations becomes hot and adds to the air temperature. Activities like drilling, blasting, and welding add to the heat load put on miners, on the surface and underground.
Why is it hot in deep mines?
Where is the world’s deepest pit?
Bingham Canyon Mine
Bingham Canyon Mine, located near Salt Lake City, is the world’s deepest man-made open pit excavation. The mine is 2.75 miles (4,5km) across and 0.75 mile (1,2km) deep.
Where is most of the gold in the world?
About 244,000 metric tons of gold has been discovered to date (187,000 metric tons historically produced plus current underground reserves of 57,000 metric tons). Most of that gold has come from just three countries: China, Australia, and South Africa. The United States ranked fourth in gold production in 2016.
How deep is the largest mine area?
AngloGold Ashanti’s Mponeng gold mine, located south-west of Johannesburg in South Africa, is currently the deepest mine in the world. The operating depth at Mponeng mine ranged from between 3.16km to 3.84km below the surface by the end of 2018. Ongoing expansions are expected to extend the operating depth further to 4.27km .
What is the biggest man made hole?
The Bingham Canyon open-pit copper mine is the largest man-made excavation on earth, a hole nearly three miles wide and nearly four thousand feet deep.
What is the deepest natural hole in the world?
The deepest natural hole in the world is accually under water. It is called the Mariana Trench and is located in the ring of Fire. It’s depth: 9,994m.
How deep is an underground mine?
Undergrounds coal mines can drive 2,500 feet (750 meters) into the Earth and other types even deeper — uranium mines can reach 6,500 feet, or 2 kilometers. But those depths are extreme; most top (or bottom) out at about 1,000 feet (300 meters) [sources: Times Wire, ARMZ, Illinois Coal Association].