So with rock phosphate currently $115US/tonne fas(free along side), lets add $5/t for loading could be $10. So a $120us/t FOB. http://www.indexmundi.com/commodities/?commodity=rock-phosphate
From the POZ ann
"POZ shall be entitled at its sole discretion to convert its Joint Venture interest to a Royalty of
2% of all future Joint Venture gross revenue based on the market free on board price for all
shipments of phosphate rock from an Australian Port."