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The Orapa diamond mine is the world's largest
diamond Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic The diamond cubic crystal structure is a repeating pattern of 8 atoms that certain materials may adopt as they solidify. Wh ...

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mine by area. The mine is located in Orapa, a town in the Central District of Botswana about west of the city of Francistown. Orapa ("resting place for lions") is owned by Debswana, a partnership between the De Beers company and the government of Botswana. The mine was discovered on 1 March 1967, a year after Botswana’s independence, by a team of De Beers geologists, including Manfred Marx, Jim Gibson and led by Dr. Gavin Lamont. It is the oldest of four mines operated by the company, and began operations in July 1971. The revenue the mine generated is credited for transforming the Botswana economy, as it allowed the government to invest in critical social services and national infrastructure. Orapa is an open pit style of mine and is the largest diamond mine in the world by area. The mine is located on two kimberlite volcanic pipe, pipes that converge near the surface, covering . Orapa operates seven days per week, and produces of ore and an additional of waste rock per year. Currently, the Orapa mine annually produces approximately of diamonds. The recoverable ore grade at the mine is about per tonne. The mine was expanded in 1999, doubling its previous capacity. The processing plant at Orapa processes the ore produced at Orapa as well as two of Debswana's three other mines, the Letlhakane diamond mine, Letlhakane and Damtshaa diamond mines. Orapa and its sister mine Letlhakane employ over 3,100. Debswana also maintains a 100-bed hospital, pre-primary and primary schools for employees' children, and the Orapa game park. The mine maintains an ISO 14001 certificate for environmental compliance, and places some importance on water conservation and waste management. The preserved Cretaceous (Turonian) lake sediments overlying the pipe are an important locality for fossil insects.


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;* https://en.israelidiamond.co.il/wikidiamond/diamond-mining-mines/orapa-diamond-mine/ ;Notes
Debswana diamond mines
(Retrieved April 13, 2005)
Orapa
(Retrieved April 29, 2008) Diamond mines in Botswana Surface mines in Botswana Diatremes of Botswana Pre-Holocene volcanoes {{Botswana-geo-stub