"2) You need to understand the different parameters

• Interest rate: value that money loses for each year that passes (8% in our case)"

8%.  What a joke.  You are talking about inflation.  It has averaged sub-2% over the last twenty years.  Schaft Creek is so derisked and poly-metallic rich it is super-safe from an economics standpoint.

LOL  https://www.statista.com/statistics/271247/inflation-rate-in-canada/

You also have many other obvious flaws in your pathetic attempt to "guide" on our understanding of the realities of NPV calculations.

You know very well that using "base" numbers from the 2012 FS is also a joke.  How many times have we gone over this??? 

Lets completely change the 2012 economics first with converting 171 MT of waste-not-waste, huge double whammy to improving NPV, 20% more pay-dirt and an equivalent amount of reduced costly waste to manage.  Apply all the cost savings optimizations  over the last 7 years and then apply all the price improvements.  

You didn't even get right the cashflow split until CF's financing is repayed.  Still got it wrong on your second attempt I just noticed.

Where is all the optionality in your cals?   Then you must do a ROV using NPV5 and NPV3.

You are so far off in left field, yet trying to sound like an expert ...
you are insulting our intelligence again.