my ammended CLA valuation, page-45

ECobalt, US cobalt project (0.59% co & 0.7% cu), has a Capex of US$187m for 1mtpa.

NZC, DRC near surface deposit (0.37% co & 3% cu), using DMS low capex of US$53m for 1mpa, recovery rate for copper 64% & cobalt 40%; or using high capex (Leach) of USD$245m for 1mtpa, recovery rate could improve to 90% for copper & 75% for cobalt.

CLA, cobalt grade is substantially lower than ECbalt and NZC, if set up a 2mtpa for 0.13% co, should cost a lot more, imo.

I know a laterite deposit requires much higher capex, around 2x, ARL, 1mtpa, capex A$599m.

Grade, Thickness, depth, time to production, dilution, many factors to consider, imo.

http://www.ecobalt.com/assets/docs/170927_ECS-Technical-Report.pdf