Costs decline at Copper Mountain in BC February 16, 2021 Commodities Last year, Copper Mountain Mining’s (TSX: CMMC; ASX: C6C) 75%-held namesake mine in B.C. recorded all-in costs of US$1.90 per lb. copper (cash costs of US$1.53 per lb. and all-in sustaining costs of US$1.69 per lb.), in line with the company’s revised all-in cost guidance of US$1.80 to US$2 per lb. All-in sustaining costs for 2020 decreased by 18% when compared with 2019 numbers. Fourth-quarter cash costs came in at US$1.43 per lb. of copper, translating to all-in sustaining costs of US$1.58 per lb. and all-in costs of US$1.82 per copper lb. Strong fourth-quarter performance, which included a record output of 23.1 million lb. of copper, was based on higher grades processed.