Nice..... that is better Jezzaaa, finally posting the model you...

Nice..... that is better Jezzaaa, finally posting the model you promised me from after your Cairns holiday....

I'll add the following from my previous posts on this.
https://hotcopper.com.au/posts/54125002/single
https://hotcopper.com.au/posts/54078264/single

At 10,000ktpa

• Direct operating cost US$4,309/t ( not 4600 )
• There is a cost of 3% Royalties on realised revenue.
• 4.5% installed equipment "sustaining capital."
• Byproducts created in the production process.35,000 t/y of potash and 25,000 t/y of magnesium hydroxide depending on price there is another ~US$12M or so a year... don't now what the prices are.

I personally would use 10% discount rate. But it's not like you are using 2% or 20% so I guess it's close enough.

Above would need to be approximated for other scale numbers, not necessary but would make it more accurate.