In Botswana, the Department of Mines and Mineral Resources, Green Technology and Energy Security led by Hon Sadique Kebonang in Gaborone, maintains data regarding mining throughout the country. Debswana, the largest diamond mining company operating in Botswana, is 50% owned by the government. The mineral industry provides about 40% of all government revenues. In 2007, significant quantities of uranium were discovered, and mining was projected to begin by 2010. Several international mining corporations have established regional headquarters in Botswana, and prospected for diamonds, gold, uranium, copper, and even oil, many coming back with positive results. Government announced in early 2009 that they would try to shift their economic dependence on diamonds, over serious concern that diamonds are predicted to dry out in Botswana over the next twenty years.