Harmony Gold Mining Company Limited engages in the exploration, extraction, and processing of gold in South Africa and Papua New Guinea. The company also explores for uranium, silver, and copper deposits. The company has nine underground operations in the Witwatersrand Basin; an open-pit mine on the Kraaipan Greenstone Belt; and various surface treatment operations in South Africa. It also owns interests in the Hidden Valley, an open-pit gold and silver mine; and the Wafi-Golpu, a project in Morobe Province in Papua New Guinea. Harmony Gold Mining Company Limited was incorporated in 1950 and is headquartered in Randfontein, South Africa.