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Organised mining began in the 1920s with bauxite first being recorded in 1920 along the Falaba to Waia road. [4] [5] Diamonds were found in the early 1930s, from 1934 to 1956 the Sierra Leone Selection Trust (SLST) held the monopoly for mining, prospecting for and marketing diamonds throughout Sierra Leone.
It is the second largest found in Sierra Leone, the largest being the Star of Sierra Leone, a 968.9-ct diamond discovered in 1972. The diamond appears to have a reddish stain coating it. The Ministry of Mines and Mineral Resources has attempted to clean it by "boiling (it) in hydrofluoric acid and nitric acid for 72 hours". [1]
After the end of the civil war in Sierra Leone in 2002 – and once the country had joined as a participant of the Kimberley Process Certification Scheme in 2003 – Koidu Limited was the first commercial diamond mining company to invest in the development of the resource sector in Sierra Leone, focusing initially on the kimberlite deposits at Koidu.
The Government of Sierra Leone headed by the Minister of Natural Resources under the Administration of president Ahmad Tejan Kabbah originally granted a Mining Lease for the Tongo Diamond Field to Rex Diamond Mining Corporation Limited, a diamond mining and exploration company with its head office in Antwerp, Belgium.
Diamond mining companies of the Democratic Republic of the Congo (2 P) Diamond mining companies of Sierra Leone (1 P) B. BHP (2 C, 53 P) D. De Beers (1 C, 22 P) R.
Pages in category "Diamond mines in Sierra Leone" This category contains only the following page. This list may not reflect recent changes. T. Tongo, Sierra Leone
W hen the Chinese gold miners came to Masumbiri town in northern Sierra Leone, everyone lined up for jobs. Dayu, a private company that started working in Sierra Leone last year, was just the ...
In 1955, the SLST abandoned mineral mining and settled on mining the Yengema and Tongo Fields. However, with the creation of the Sierra Leonean parastatal National Diamond Mining Company in 1971, the diamond company was effectively nationalized, ending the SLST in Sierra Leone.