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Mponeng is an ultra-deep tabular gold mine in South Africa in the Witwatersrand Basin of the Gauteng Province. [1] Previously known as Western Deep Levels No1 Shaft, the mine began operations in 1986. [2] It is one of the most substantial gold mines in the world in terms of production and magnitude, reaching over 4 kilometres (2.5 mi) below the ...
This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera 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.
The deepest mines in the world are the Mponeng and TauTona (Western Deep Levels) gold mines in the Witwatersrand region of South Africa, which are currently working at depths exceeding 3,900 m (12,800 ft). [13] The deepest inactive mine in Asia is the Kolar in the Karnataka region of India. Closed in 2001, the main shaft had reached a depth of ...
The mine is near the town of Carletonville in South Africa. At approximately 3.9 kilometers (2.4 mi) deep, it is home to the world's second deepest mining operation, rivalled only by the Mponeng Gold Mine, formerly Western Deep Levels No.1 Shaft. TauTona was temporarily closed in 2018. [2] The mine was one of the three Western Deep Levels mines.
The Oklahoma Legislature abolished the State Mining Board and replaced it with the Oklahoma Mining Commission in 1985. The Commission is a nine-member board that serves as the governing body of the Department and is responsible for approving the Department's budget, establishing policy and appointing the Director of the Department.
Desulforudis audaxviator is the only bacterium found in water samples obtained 2.8 kilometres (1.7 mi) underground in the Mponeng Gold Mine in South Africa. [2] [3] Approximately four micrometres in length, it survives on chemical food sources derived from the radioactive decay of minerals in the surrounding rock.
The Woodward Iodine company plant is 3.7 miles (6.0 km) west of Woodward, Oklahoma and uses a 6,600 feet (2,000 m) deep well north of the city, while the IOCHEM plant 2.5 miles (4.0 km) east of Vici, Oklahoma extracts the brine from a 9,800 feet (3,000 m) deep well. [7] North American Brine Resources operates a plant near Dover, Oklahoma.
This is a list of Superfund sites in Oklahoma designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up ...