Not to rain on anyone's parade but if you want to base value on NPV, there are plenty of other stocks out there with much bigger ratios of NPV to present market cap. Look at Terrane Metals - Page 6:

http://www.terranemetals.com/i/pdf/2009-12-17_Technical%20Presentation.pdf

NPV of Mt Milligan $2.6B. Terrane has 40% stake (Goldcorp has the rest). 40% of $2.6B is $1.04B and Terrane's market cap is only $100MM?!?! For a fully permitted mine with 6MM ounces in a safe location.

Terrane needs to move up over $4 to be valued properly. With that said, I suspect Kimber is undervalued and will do well when the Gold Mania hits but we have to keep things in perspective here.