Stanbork,
Can you share where these values come from? The latest estimates I heard were from the latest episode of the Global Lithium Podcast in which Joe Lowry states $2.27B for stage 1 and $1.73B for stage 2. Total of $4B USD. Originally, the PFS from 2018 estimated $581M for phase 1 and $478 for phase 2. Differences are 60 kTPA in the PFS now increased to 80 kTPA.
AXP