Cobalt Blue Holdings Limited, together with its subsidiaries, engages in the exploration and evaluation of mining properties in Australia. It operates through Broken Hill Cobalt Project, Broken Hill Technology Centre, Kwinana Cobalt Refinery Project, and Halls Creek Project segments. The company explores for cobalt, nickel, copper, zinc, and deposits. It holds 100% interest in the Broken Hill cobalt project comprising five exploration licenses and two mining leases covering an area of approximately 220 square kilometers located in the Broken Hill, New South Wales. It also operates the Kwinana refinery, a cobalt/nickel refinery located in Western Australia that produces battery ready sulphates as feedstock for electric vehicle batteries. In addition, the company operates Halls Creek Project, a proposed copper/zinc mining project located in the Kimberly region of Western Australia. Cobalt Blue Holdings Limited was incorporated in 2016 and is based in North Sydney, Australia.