hi cash,
trawling through recent ann i think we received $5.5M in pre-payment for IO delivery. based on current costs and IO price of $120 i think it would be around 5 shipments of 40k tonnes before IO sales add to our cashflow. however, there's no mention of how we repay these pre-payments, ie, 100% of each delivered shipment is taken or a percentage (say 50%) in which case it will add to our cashflow.
maybe tony can comment if he's permitted.