Sandfire’s first deposit at Black Butte shows potential to produce 23 000 t/y of copper

ASX-listed Sandfire Resources America has announced a maiden mineral reserve of 8.8-million tonnes at 2.6% copper for 226 100 t of contained copper for the Johnny Lee deposit at the company’s Black Butte copper project. The company also published a feasibility study on the deposit, which is the cornerstone deposit of the Black Butte copper project, in White Sulphur Springs, Montana.