Ann: Strategy Briefing Day, page-67

I personally believe based on research that GXY's SDV tenements hold a lot more than 2.5mt LCE of reserves.
Thats enough for 50 years at 50ktpa LCE.
There comes a point at which further drilling to define a larger resource adds no real value apart from bragging rights.
I think the company's resources are best utilized with moving forward with production.
Take a look at how additional gains on NPV calculations drop off after 10 or 15 years of production.