Figure 8: Conventional Antamina Value Drivers: Financial Perspective (Without Commingling) Impact of Commingling on Financial Value Drivers From a financial perspective, the adoption of commingling among Antamina’s value drivers removes constraints on mineral resources by increasing tailings storage capacity, enabling the utilization of new dumps, and allowing for an expansion in the volume of usable resources. As a result, the mine’s operational life is extended and asset value is enhanced. Regarding dump utilization, the implementation of commingling has the potential to reduce the requirement for dumps located in karstic zones, which demand significant capital expenditure (Capex). This can lead to a reduction in initial investment by up to 30% in scenarios comparing commingling versus non-commingling approaches. This saving is achieved through the integration of previously separate infrastructures into a single system, which optimizes the use of available area in the East Extension dumps and prioritizes the use of mechanized systems over conventional trucking methods. 110
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