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This is a list of open-pit mines. ... making it the deepest hand-excavated pit in the world. Now a museum. The Jagersfontein Mine – operating between 1888 and 1971 ...
The mine has been in production since 1906, and has resulted in the creation of a pit over 0.75 miles (1,210 m) deep, [5] 2.5 miles (4 km) wide, and covering 1,900 acres (3.0 sq mi; 770 ha; 7.7 km 2). It was designated a National Historic Landmark in 1966 under the name Bingham Canyon Open Pit Copper Mine. [2]
This list of deepest mines includes operational and non-operational mines that are at least 2,212 m (7,257 ft), which is the depth of Veryovkina Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
This today consists of lignite seams up to 100 m thick. At 299 m below sea level, the deepest point of the Hambach open-pit mine forms the deepest artificial depression in North Rhine-Westphalia. [5] Since 1995, the giant bucket-wheel excavator Bagger 293 is used to remove the overburden. It holds several Guinness records for terrestrial vehicles.
The Kimberley Mine or Tim Kuilmine [1] (Afrikaans: Groot Gat) is an open-pit and underground mine in Kimberley, South Africa, and claimed to be the deepest hole excavated by hand, although this claim is disputed by Jagersfontein.
The mine is more than 525 meters (1,722 ft) deep (4th in the world), has a diameter of 1,200 m (3,900 ft), [1] and is one of the largest excavated holes in the world. Open-pit mining began in 1957 and was discontinued in 2001. Since 2009, it has been active as an underground diamond mine. [2]
The mine began ore production in 1966, as an open pit mine and eventually evolved into an underground mine. The mine produces copper, zinc, and several other metals. [4] [9] The mine has the oldest-known flowing water on Earth. A billion-year-old water sample collected from the mine was added to the collection at Ingenium in Ottawa on November ...
The mine is a low-cost, low-yield open pit operation, with grades well below one gram of gold per tonne of ore. In recent years, 2008 and 2009, the mine accounted for 5% of AngloGold Ashanti's worldwide production. It is the company's only active operation in the United States. [10]