Sierra Gorda - Ore Reserve and Mineral Resource

• A first time Ore Reserve estimate in accordance with the JORC Code (2012)1 guidelines at 782 million tonnes, averaging 0.38% total copper, 0.020% total molybdenum and 0.06 g/t gold, at a total copper equivalent2 grade of 0.44% (Table A). • An update to the Mineral Resource estimate, to reflect the first time reporting of a 51 million tonne sulphide stockpile averaging 0.28% total copper, 0.013%