According to a quick google, Australia imports 350,000 tonnes of...

According to a quick google, Australia imports 350,000 tonnes of Potash (2008), worth $225 million. At least in the medium term, this will be the production Cap for RWD.

I see no reason, (other land land usage restrictions) why RWD wouldn't be able to ramp up production and export their product, but I would air on the side of caution until such a large operation is approved.

Like I said in a previous post, RWD is set to be a monopoly in this country, and its growth will be tied to population growth - A very Warren Buffet type investment (but I wont go that far). Another huge plus for investors.