Mount Ridley Mines Limited engages in the exploration for mineral properties in Australia. The company explores for nickel, iron, copper, and gold deposits, as well as rare earth elements. It primarily holds 100% interests in the Mount Ridley project that consists of 9 granted exploration licenses approximately 3,400 square kilometers located in the southwest Western Australia; and the Weld Range West project located in Western Australia. The company was incorporated in 2000 and is based in Nedlands, Australia.