A look at vale sa Nickel projects;20 Oct 2023 18:12
Voiseys bay not here but here you see 2 projects, both with 30% cost increases!
https://www.reuters.com/article/vale-goro-idUSN2150037320091021
Also, onca puma, which is in the same state as aguaia and has roughly the same grade Fe & Ni, having the same company build the furnace, producing a 25%+ NPI (high grade) had to then spend additional funds because the furnaces broke apart after 18Months. Turns out they found multiple design flaws that needed complete rebuilds to address.
Originally commissioned in 2011, onca puma on an equivalent basis, to construction, would be 667M$ for a hzm size operation & when build costs went up 30% , that would be 867M$.
Makes you wander how the original build price here was quoted half that 10 years on & that people were actually expecting the project to be on budget to begin with!
With a 2021 aisc of 4.5$/lb, I wonder what a half built 30% production addition to onca puma would be worth to vale since their operation equivalently cost over £700M and that was before throwing a couple £100 more at furnace rebuilds?
Probably nothing to nobody!