Orapa diamond mine is located in Botswana

The Orapa diamond mine is the world's largest diamond mine. The mine is located in Orapa, a town in the Boteti Sub-District of Botswana about 240 kilometers (150 mi) 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. It is the oldest of four mines operated by the company, having begun operations in July 1971.

• http://en.wikipedia.org/wiki/Orapa diamond mine
• http://www.ckit.co.za/right-index/news-letter/newsletter/2005/january/mine.htm