Good to hear my friend...thats not a bad read and explains it quite simply!
I just remember an audio link from an alaskan radio podcast from a cpl months back where a USGS spokesman talked of not being able to quantify the scope/volume of such sands as what i believe Yukon are now targeting and how modern tech is changing how there being treated...all very exciting...in particular as they now believe they have the potential to be extracted with this modern tech, apparently its evolved to the point were previously abandoned targets are being revisited with success.
Cheers and bottoms up!