Mineral math on ncu webData is about 5 years old. About 4 billion pounds cueq. Since then huge ads plus tedyboy with up to 10% cu. On surface samples. Also copper ridge and dimples added.
My guess is about 10 billion pounds minimum.
One can understand how a sale to a major is appropriate. A major can get the show on the road.
I can not envision anything less than 5 billion final bid.
Nf