RE: Fraser Institute Mining Survey28 Apr 2022 09:47
Economic EvaluationThe PFS investigated multiple scenarios in order to identify an initial base case to take forwards, with additional resources and upside to be investigated, supporting the next phase optimisations, and confirming the application of block cave mining to the Alpala underground resource. Attractive initial cave project, potentially delivering:?Initial 26-year operating life and 25Mtpa process plant throughput?Total ore production of 558Mt, containing 3.3Mt Cu, 9.4Moz Au and 30Moz Ag?Process plant producing 2.8Mt Cu, 7.6Moz Au and 21.7Moz Ag over the initial 26 year life of the project?Average annual production in five years following initial cave ramp up of 190ktpa Cu, 680kozpa Au and 1.3Mozpa Ag?Average annual production7 for initial cave of 132ktpa Cu, 358kozpa Au and 1.0Mozpa Ag ?All in sustaining cost of US$0.06 /lb Cu over the initial 26 year mine project?Estimated initial capital expenditure of US$2.7bn for the initial cave development, first process plant module and infrastructure?Payback of 4.7 years from start of operations?After-tax NPV and IRR of US$2.9bn and 19.3%, respectivelyAn initial Mineral Reserve estimate for the Cascabel project of 558Mt, with 0.58% Cu, 0.52 g/t Au and 1.65 g/t Ag for 3.3Mt Cu, 9.4Moz Au and 30Moz Ag.Exploration success and future potential with unexplored areas identified for future drilling and extension of additional reported resources.The PFS underpins the Mineral Reserve estimate and further optimisations of the mine and process plant are expected to deliver additional value.The availability of low-cost hydropower, on site water resources, the use of targeted underground mining, process plant configuration, the potential use of an electric mining fleet, concentrate transport via a pipeline are expected to deliver a lower carbon footprint compared to projects which do not have these benefits.The Cascabel project DFS is planned for completion in H2 CY23, with additional optimisations including:?Further investigations into process plant feed rates, including additional resources such as the Tandayama-Ameríca resource?Capital cost reduction opportunities?Alpala underground mine design optimisation, mine sequence and scheduling, application of macro blocks ?Process plant design optimisation, following additional test work?Hydropower project development