Why not just skip the Pre-Feasibility and do a Feasibility Study instead?

Here, paraphrased, is how Dr. Webb answered this question:

There are minimum standards which are generally adhered to in a Pre-Feasibility Study (PF) or a Feasibility Study (F). While there are no maximum limits to these standards. Much of Tyhee’s metallurgical work, for example, in its PA was done to a PF standards and as such, need not be refined for the Ormsby Zone. Only the Nick Lake Zone needs to have metallurgical work upgraded. Thus, it’s possible, perhaps even likely for Tyhee to complete a PF to acceptable standards, and then make a production decision at that point. Therefore, a Feasibility Study may not be required.

Also, some aspects of Tyhee’s engineering work cannot be completed to F standards without a certainty in permitting. If, for example, Tyhee’s airstrip needed to be moved (as considered in the response to the draft TOR as submitted by one group), then doing a detailed Feasibility standard work and upgrades to studies would be wasted. Similar situations could also arise with Tyhee’s Tailings Containment Area, its site plans, and waste pads. It would be more cost effective for these to be engineered to a PF study. It wouldn’t seem wise to engineer them to an F standard, and then have them rejected at the permitting level.

Cheers,

Baires