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The Big Hole has a surface of 17 hectares (42 acres) and is 463 metres (1,519 ft) wide. It was excavated to a depth of 240 metres (790 ft), but then partially infilled with debris reducing its depth to about 215 metres (705 ft). Since then it has accumulated about 40 metres (130 ft) of water, leaving 175 metres (574 ft) of the hole visible.
Jagersfontein Mine / ˌjeɪɡərzˈfɒnteɪn / was an open-pit mine in South Africa, located close to the town of Jagersfontein and about 110 kilometres (68 miles) south-west of Bloemfontein. [1][2] Since it was first established, [3][4] two of the ten biggest diamonds ever discovered, the Excelsior and the Reitz (now called the Jubilee), were ...
The Big Hole is the principal feature of a May 2004 submission which placed "Kimberley Mines and associated early industries" on UNESCO's World Heritage Tentative Lists. [ 12 ] [ 13 ] By 1873, Kimberley was the second largest town in South Africa, having an approximate population of 40,000.
The Big Hole, Kimberley. The Mineral Revolution began with the discovery of diamonds at the town of Kimberley in 1867. The discovery of diamonds led to a rush of prospectors descending on the town, whose population skyrocketed as increasing numbers of prospectors arrived to seek their fortune.
30 December 1982. Listed. 8 September 1983. List of Superfund sites. The Berkeley Pit is a former open pit copper mine in the western United States, located in Butte, Montana. It is one mile (1.6 km) long by one-half mile (800 m) wide, with an approximate maximum depth of 1,780 feet (540 m). It is filled to a depth of about 900 feet (270 m ...
Lake Peigneur[2] is a brackish lake in the U.S. state of Louisiana, 1.2 miles (1.9 kilometers) north of Delcambre and 9.1 mi (14.6 km) west of New Iberia, near the northernmost tip of Vermilion Bay. With a maximum depth of 200 feet (60 meters), it is the deepest lake in Louisiana. Its name comes from the French word "peigneur", meaning "one who ...
Kola Superdeep Borehole. The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth, which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1] It is the result of ...
The Mir mine was the first developed and the largest diamond mine in the Soviet Union. [10] Its surface operation lasted 44 years, finally closing in June 2001. [ 9 ] After the collapse of the USSR in the 1990s, the mine was operated by the Sakha diamond company, which reported annual profits in excess of $600 million [ clarification needed ...