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Is gold surface or underground mining?
It can be both. Right now, the largest gold mine in Australia is an open pit mine. However, The Homestake mine in South Dakota was 8000 ft deep- an underground mine with 375 miles of passageways. It all depends on where the gold is located.
What type of mining can i use with an horizontal layer of coal close to the surface?
Open Cast mining. A form of strip mine.
What kind of mine is a quarry?
A quarry is an example of the open-cast removal of a commodity - be it coal or building material such as limestone, etc.
Is there a difference between a pit and a mine?
A pit is open, whereas a mine has a ventilation circuit.
Why are open pit mines used more?
There are some things that are difficult to mine via the open pit method. But when it is possible to apply the techniques of the open pit mine to recover rock and minerals, this mining type is good for basically two reasons. One is because it is relatively safer, and the other relates to the scale of the mine. We recover materials from the ground every day, and have done so for thousands of years. The open pit mine presents far fewer hazards than underground mining, and the reasons are fairly obvious. In a shaft or drift, there are many things that can go wrong and cause loss of life and/or equipment. There are far fewer in an "outdoor" mining activity as it is practiced in an open pit. The largest mines in the world are essentially big holes in the ground. These open pit mines use the economy of scale to produce materials, copper being one. The concentrations of copper are not high, so it is essential to move large volumes of ore to recover the metal in a manner that makes it cost effective on the site, and competitive on the world market to do so.
Where is the world's largest diamond mine?
The world's largest diamond mine is located in Botswana. It is of open pit construction and the area of it makes it the world's largest diamond mine.
What is the world's largest open mine?
The worlds largest open pit mine is the Kennecott copper mine in Utah. its is more than 2 3/4 miles across and more than 3/4 of a mile deep. The worlds largest mine? The Syncrude mine (the biggest mine in the world at 191 km2). Quite a bit larger than Kennecott.
What is largest open pit mining?
The world largest open pit mining is bingham Canyon Mine, it's 1,900 ares and 7.7 km2 and 2.5 miles deep!
Where is largest open pit copper mine?
Utah, USA :)
Largest open pit iron mine in Minnesota?
The Hull Rust Mahoning Mine is the largest open pit iron mine in Minnesota. It is located in the city of Hibbing, Minnesota. It is about 1.5 miles across and 3.5 miles deep.
What is the largest diamond production in the world?
The worlds largest diamond mine by surface area is located in Botswana, in Africa: the open cast Orapa diamond mine. Read more about it, in the related links. The world's largest diamond mine in terms of volume is located in Mirnyj, Eastern Siberia, Russia, and is 525 metres deep and 1,200 metres in diameter, while some say that it is 1,200 metres deep.
What is the name of Australia's largest gold mine?
Australia's largest open cut gold mine is the Super Pit at Kalgoorlie in Western Australia.The largest gold mine in Australia is the Telfer Mine on the edge of the Great Sandy Desert.
How are diamonds mined in Jubilee Mine Russia?
The Jubilee Mine in Russia is the largest open-pit diamond mine in the world. It exists on the Yubileynaya kimberlite pipe. From a mining engineering Web site, here is the definition of open-pit mining: "[It is]. . . an excavation or cut made at the surface of the ground for the purpose of extracting ore and which is open to the surface for the duration of the mine's life."
What is a Hibbing Minnesota landmark?
One of Hibbing's landmarks is the Vermilion iron ore range, which includes the largest open-pit mine in the world. Actually, the Hull Rust Mahoning Mine in Hibbing is part of the Mesabi Range and is one of the largest open pit iron mines in the world. The mine,supplied as much as one-fourth of all the iron ore mined in the US during its peak production during WWI and WWII.
The biggest open-cast mine in India is found at?
ranchi
What country does boron come from?
Boron, or borate or borax, is mined in several places. One mine in particular is in California (USA), approximately 75 miles north of Los Angeles. US Borax Boron Mine is the largest open pit borate mine in the world. US Borax is owned by the mining conglomerate Rio Tinto, the third largest mining company in the world.
What open cast mine is the biggest?
well there is one in south Africa
