During the March quarter 2021, the Phu Kham Operation produced 9,544 tonnes (t) of copper in concentrate at a C1* cost of US$1.08/lb after precious metal credits from 14,307 ounces (oz) of gold and 53,994oz silver. An all-in sustaining cost (AISC**) of US$2.44/lb of copper was realised. More than 10.5 million tonnes (Mt) of ex-pit material was ...