St. Barbara Ltd. engages in the development and exploration of gold and mineral properties. The company is headquartered in Perth, Western Australia. The firm's operations include the Atlantic Operations and the Simberi Operations. Its Atlantic Operations in Nova Scotia, Canada consists of its open pit Touquoy mine, along with three additional planned projects nearby at Fifteen Mile Stream, Cochrane Hill and Beaver Dam. Its Atlantic Operations are located approximately 80 kilometers north-east of Halifax, Nova Scotia, Canada. The firm is also exploring the Moose River Corridor and elsewhere in Nova Scotia. Its Simberi Operations consists of an open cut mine on the northernmost island in the Tabar group of islands in the province of New Ireland in Papua New Guinea. Its Simberi Operations is located approximately 900 kilometers away from the capital of Papua New Guinea, Port Moresby.