This stock will fly, page-20

It is questionable how reliant one can be on the info in the feasibility study where oxide ore had a cut off grade of 0.34 grams a tonne , given we know the company has been running at a loss with ore processed at around 0.9 grams head grade.
The cut off grade for fresh ore in the feasibility study is 0.43 grams a tonne given this ore is deeper and as you inferred will have a higher bond milling index that also seems questionable how profitable the company will be in breaking even at o.43 grams a tonne

Therefore I question your assumption :
" It appears the FS was based on well derived information or studies."

I have a small holding based more on hope than common sense .