The emphasis on quality is because majors have expressed an interest in having a very accurate FS because this deposit is intended to be mined. They have all asked for real world numbers. Companies that produce a BFS that doesn't pass first muster fail miserably in negotiation. There are a few 5 cent/pound ones in recent times that missed the real world mark by failing to anticipate such things as taxation. Many who are now under the taxation umbrella saw it coming but excluded the impact. The buyers didn't.