I don't like commenting much anymore but roy you are missing a...

I don't like commenting much anymore but roy you are missing a much bigger pictue here:

"It is expected that the mining plan will largely reflect the open cut ore reserve statement, and therefore the life of the proposed operation in the Definitive Feasibility Study (DFS) will be of the order of 4 years. Pit optimisation studies by Runge, however, reveal that a
relatively modest 7% improvement in economic factors have the potential to increase the reserve and mining life by over 50%. By contrast, a 20% deterioration in economic
factors shows a much more modest 13% reduction in mining life and reserve."

PG