RE: H M Murdoch and Pauly79 ,I don't thinkWhile I am somewhat familiar with the Canadian regulations under 43-101, I'm not familiar with the US regulations.
Seems from reading HHappy's post that the SEC rules are a bit more restrictive than the Canadian rules relating to the publishing of estimates. The Canadian regulation makes a distinction between resources and reserves, using the definitions of the Canadian Institute of Mining, Metallurgy, and Petroleum.
If I recall correctly, reserves are a more proven form of deposit than resources, and there is a higher threshold for proving them.
So, in conclusion, 43-101 is a Canadian instrument, but from HHappy's info, it seems that the SEC rules are a bit more stringent when it comes to releasing resource estimates. I'm not certain on this, but I imagine that even under the Canadian regulations using radon measures wouldn't be sufficient to claim an 'inferred resource', and that perhaps a preliminary drilling program would be required before a company could make a claim about resource estimates. A more extensive program would be required to make claims abour reserves.
If NAG is starting its drill program soon, then hopefully they will be able to report some numbers back on the resource estimates for the property. If the resources can be confirmed as reserves later on, then we're in the money.