Castillo Copper Limited engages in the exploration and examination of mineral properties in Australia and Zambia. It primarily explores for copper, silver, lead, and zinc deposits. The company holds a 100% interest in the NWQ Copper project located in the Mt Isa copper-belt of Queensland, Australia; the Mkushi, the Luanshya, the North and South Lumwana, and the Mwansa projects covering approximately 1,100 square kilometers in Zambia; the Broken Hill, a zinc-silver-lead project consists of four tenements covering 801.3 square kilometers situated in New South Wales, Australia; and a 100% interest in the Cangai copper project located in New South Wales, Australia. Castillo Copper Limited was incorporated in 2009 and is based in West Perth, Australia.