Story on this in the AFR that can be downloaded from Google.
Interesting that they paid $2.4mil for the June qtr and expect to be liable for more than $20mil in the current financial year when their royalty rate to the Qld govt is currently under 4% on net smelter return due to the current zinc price being $A3275/t.
I still believe this is the only royalty they now pay as the 2% on NSR that was payable to Century Bull was acquired when they purchased the remaining 30% of the Century mine by purchasing Century Bull - but haven't had the time to dig deeply enough to confirm this.