Maybe CoPilot can help your understanding of this?Over what...

Maybe CoPilot can help your understanding of this?

Over what period is the IRR normally calculated for a mining project?

The Internal Rate of Return (IRR) for a mining project is calculated over the entire life cycle of the mine.

This includes all cash flows from the initial investment, operational revenues, and costs, through to the final closure and post-closure activities. The IRR is a discount rate that makes the net present value (NPV) of all cash flows (both positive and negative) from a project equal to zero.In practice, this means estimating cash flows from the start of the investment (exploration and development) to the end (mine closure and rehabilitation), which could span decades.

The specific period will depend on the projected operational life of the mine, which is determined by factors such as ore reserves, production rates, and market conditions.