CST Mining Group Limited, formerly China Sci-Tech Holdings Limited, is an international copper mining company. The Company is an investment holding company and is engaged in acquisition, exploration, development and mining of copper and other mineral resources materials, investment in financial instruments, and property investment. It operates in four segments: Investments in financial instruments, Property investment, Mining business-Australia and Mining business-Peru. As of March 31, 2011, the Company had two operations: a wholly owned mine in Queensland, Australia (Lady Annie) and a late-stage development project (Mina Justa) in southern Peru through its 70%-owned company, Marcobre S.A.C. The Company also owns a 9.9% interest in G-Resources Group Limited, whose primary asset is a 95% interest in the Martabe Gold and Silver Project in Indonesia. On May 31, 2010, it acquired CST Minerals Lady Annie Pty Ltd. On June 11, 2010, it acquired Chariot Resources Limited.