It's not quite as simple as using the gross metal value to determine the project value.

The feasibility study showed we have $33.4B in metals that are mineable.

Less $7.7B lost due to recovery rates

Less $3.3B for initial capex

Less $1.2B for sustaining capex

Less $12.5B for operating costs

Less $1.9B for taxes

This leaves us with a grand total profit over the mine life of $6.8B. Assuming we get 25%, it works out to $1.7B for our shares, or $3.95 / share. Before everyone gets all excited, this is the grand total profit from now until the year 2041. We do have the upside opportunities of better recoveries, extending the mine life, higher metal prices, etc and the downside risk of capex/opex inflation, lower metal prices, etc.