Harmony Gold Mining Company Limited engages in the exploration, extraction, and processing of mineral properties in South Africa, Papua New Guinea, and Australasia. The company explores for gold, uranium, silver, and copper deposits. It has eight underground operations in the Witwatersrand Basin; the Kraaipan Greenstone Belt; and various surface source operations in South Africa. In addition, the company owns interests in the Hidden Valley, an open-pit gold and silver mine; and the Wafi-Golpu project located in Morobe Province in Papua New Guinea. Further, it holds interest in Rosby and Eva Copper Project located in Queensland, Australia. The company was incorporated in 1950 and is based in Randfontein, South Africa.