explmanThe latest 43-101 report for Lac Dore clearly shows the pit outline on Figure 4a, it's after page 39. There don't appear to be any issues with the pit outline and the surrounding properties.
You state that bench scale studies cannot be used for a a PEA. Commerce' last PEA for their REE property had sections for Mineral Processing and Metalurgical Testing not complete at the time of publishing. Cracking for the REE's in the concentrate produced was not decided either for in house or sent to an outside processor. This is for a deposit with an in situ metal value in excess of US $50 billion.
The next PEA will probably have the benefit of at least some iron value recouped, possibly both some Fe and Ti. Capital and operating costs will change, but I think the new technology is worth the wait on the PEA.