To niggle a little further at the idea of 50 mill tons, I'll offer my thoughts(with very limited geological knowledge).

The drilling pattern to date would suggest that they are concentrating on proving up an orebody of 5-7 mill tons.

The initial suggestions of eagle one was that it was an overturned chunk of ore that had been broken off a larger mass during some sort of upheaval. The southernmost holes indicate that this is the broken off end.

The aerial surveys they are doing shows much larger body with similar qualities just south of where eagle one is. There is also a weak bridge between the two.

This would seem to me to suggest that 50 mill tons is a reasonable figure.

K