Mount Gibson Iron Limited, together with its subsidiaries, engages in the mining, crushing, processing, shipment, sale, and export of hematite iron ore in Australia and China. Its flagship project is the Koolan Island mine site located in the Buccaneer Archipelago of the Kimberley region in Western Australia. The company is also involved in treasury management, mineral resources acquisition, and investment activities. Mount Gibson Iron Limited was incorporated in 1938 and is based in West Perth, Australia.