Wife is not looking so I need to put my 2 cents in to this valuation. It would appear Geoprof you may be under estimating on you values here. Let's look at this another way. One of the two yesterday on BNN said NOT's DE1 could be worth 3 billion alone. So if you take that $3 billion divided by 40% insitu value(which VB sold for) you get $1.2 billion, you divide this by the fully diluted share which I believe is closer to 140 million you end up with $8.57 per share for DE1 alone.
Another way to look at this is 7 million tons alluded to by IBK way back when. 7,000,000 x $700/ton ext(i believe for DE1 this is very conservative) you get $4.9 billion dollar resource at 40% insitu(VB sale value) you end up getting $1.96 billion, divided by that fully diluted 140 million shares equalling $14 per share for DE1 alone.
Best I can do.