Ok so looking at the scoping study released June 4th 2019.18,230...

Ok so looking at the scoping study released June 4th 2019.
18,230 tonnes of raw battery feed produces
9623 tonnes of Cobalt Sulphate
5635 tonnes of Copper Sulphate
1544 tonnes of Lithium Sulphate
2020 tonnes of Nickel Sulphate
If you add the numbers up they are producing 572 tonnes more than the feed stock input. How can this be?

Also in today's announcement they indicate that the pilot plant study indicates that from every 2.3 tonnes of battery feed stock they produce 0.98 tonnes of black powder which is then processed with good recoveries of all products > 95%

This means that for every tonne of battery feedstock they get 0.42 tonnes of black powder for processing.
It looks to me like the scoping study numbers of June 4th 2019 are completely wrong.
Lets assume the recovery proportions remain the same as per June 4th study
This means they actually only produce from 18,250 tonnes of batteries
4041 tonnes of CoSO4
2366 tonnes of CuSO4
648 tonnes of LICl
848 tonnes of NiSO4

So Life of plant revenue US 357M
Pre Tax cash flow US 210M
Pre Tax NPV 12 US 92.4M
Initial Capital cost US 66M


Looks less exciting now payback now 4 years with very little in the way of profit over a 10 year time horizon.
Happy to be corrected if my numbers are wrong?