That's why it's important to distinguish between Resource and Reserves. Resource is what's found in the ground through drilling. It's measured in Measured, Indicated, and Inferred, based on the level of confidence in the data. Reserve is what can be economically taken out of the ground. It's measured in Proven and Probable.

So back in 2008, we had 7.7 billion pounds of Measured and Indicated copper Resource. However, the Preliminary Feasibility Study tells us that only 4.76 billion pounds could be removed economically (Reserve). So Teck is not necessarily lowballing the numbers. They are just using the most recent economic numbers (PFS). Our new Feasibility Study will give us updated Reserve number