KRR said in the November announcement CAPEX of $2 to $2.5...

KRR said in the November announcement CAPEX of $2 to $2.5 billion, they expected the projected payback period based on the analysis in the Scoping Study would be between three to four years. So using the higher figures, if the company took 4 years to pay back $2.5 billion then that equates to $625 million per year.

Calculation:
2,500,000,000/4 = $625,000,000
So if we take the extreme of $1,000,000,000/ $625,000,000 = 1.6 years
If its $700,000,000/$625,000,000 = 1.12 years.

@Money made If it is lower than $700 million then just adjust the calculations to use whatever figure you decide to use, hope that helps.

Dont forget all calculations depend on the current rate per tonne at that time.

My comments/posts are based completely on my own experience thoughts and interpretation along with my current financial position at the time.
Conduct your own due diligence, consult a licensed financial advisor or broker before making any and all investment decisions. As usual all constructive criticism welcomed.Good luck to all that hold.