Harmony Gold Mining Company Limited, through its subsidiaries, is engaged in gold mining and related activities, including exploration, extraction and processing. The Company's segments include South Africa Underground, Surface, and International. The South Africa Underground segment includes Kusasalethu, Doornkop, Phakisa, Tshepong, Masimong, Target 1, Bambanani, Joel, Unisel and Target 3. The Surface segment comprises the Company's other surface operations. The Company's International segment comprises Hidden Valley Project. The Company has operations in South Africa and Papua New Guinea (PNG). The Company's principal product is the Gold bullion. The Company's exploration projects include Golpu project and Kili Teke prospect. The Company has approximately nine underground mines, one open pit operation and several surface sources in South Africa. The Company's subsidiaries include Lydenburg Exploration Limited, Tswelopele Beneficiation Operation (TBO) and Harmony Copper Limited.