Great read about EMH, page-164

@barwood agreed on lithium demand, nope to your math:
6500 scoping study price = 108
10000 PFS price = 108 + 19400 (tons produced per scoping study) * 3500 (USD price difference) = 108+ 68 = 176 million

@millipede agreed. I am happy we have also roast and not only L-Max. My intention was never to state that because of expected higher cost it is worse method. As I stated here before my knowledge of how to get hundreds million project running is like 0.0000 nothing. If roast can get us to production one or two years sooner it can easily make up for loss in expected higher cost. For example less impact on environment and shorter EIA approval, more trust into more simple and closer to conventional process etc. But for such a significant CAPEX difference compared to reviewed scoping study I would expect more than very vague:

"A trade‐off study was completed in November 2016 comparing the operating and capital costs of the conventional sodium‐sulphate roast and the L‐Max process. It was concluded that conventional roasting technology would deliver high lithium recoveries with a lower operating cost, lower technical risk, less impurity removal, and be less dependent on potassium by‐product credits."