Introduction
In underground mining studies, success often comes down to finding the right balance between mining method, cut-off grade, cost, and productivity. For our client, that balance was key to unlocking the value of its copper deposit in Queensland. The challenge: identify the most economically viable development path in a field of complex and competing options.
The Challenge
Our client needed clarity on the best combination of mining method, cut-off grade, and throughput rate. Without that, the project risked selecting a sub-optimal development path—potentially rendering the deposit uneconomic.
The Approach
MEC used a combination of commercial mining software and an internally developed optimisation tool to test a range of underground mining scenarios. This tool allowed the team to model multiple combinations of inputs—productivity, grade, and cost—and visualise results through a “Hill of Value” curve, showing where the project’s value peaked.
The Outcome
The study identified a plausible development strategy for our client: a six-year underground mine life with potential for life extensions through near-mine resources. The results showed the project’s strong scale and return potential, supporting further study and investment confidence.
Next Steps
A forward work plan has been proposed to refine key technical inputs as part of our clients broader restart strategy – helping to move the project from study to execution with clarity and confidence.
Conclusion
By combining data-driven tools with practical mining experience, MEC provided a clear path forward – helping them move from uncertainty to strategic direction.