Former listed company Sirius Resources NL engaged in the exploration of mineral properties in Australia. It explores for nickel, gold, copper, cobalt, zinc, lead, and platinum group metals. The company held interests in a portfolio of projects covering approximately 8,500 square kilometers located in Western Australia. It owns a 100% interest in the Polar Bear project; and 70% interests in the Lawlers, Collurabbie, Fraser Range, and Youanmi projects. The company was formerly known as Croesus Mining NL and changed its name to Sirius Resources NL in September 2009. In September 2015 Independence Group acquired Sirius in a $1.8 billion deal.