Hi bootversion,
In response to your question on how to put a value on a company with drill results, but, without knowing all the facts, meaning you know the value of the dirt per tonne, but not the actual tonnage. The Chief gives a simple no nonsense approach to valuations in this answer and believe me, he is one of the best at doing quick calculations on how to put a value on a company.
http://tradingchief.com/en/stboard.php?page=read&pid=7530
Remember, as of today the market cap value that the market has put on NOT is currently $319,704,807
Hope this helps clear up any confusion, but honestly a true market cap valuation can't be asigned to NOT until they actually do a step out hole to define the limits of the ring of fire.
Al