Probably 3 more shipments this year as ironman 4527 noted a couple times-one ship/month essentially. 1-3mm and fertilizer are already stockpiled and partially processed with some probably fully processed.
Probably 2 ships of 1-3mm,plus a shipment of fertilizer to Portland and possibly another 3-18 mm shipment from Coloso vein this year.
The 1-3mm is a byproduct of main product/production -the 3-18 mm- and a lot of it built up waiting for Powerscreen 2100 while they shipped 3-18mm in 1st 2 ships(and some 1-3mm in 2nd ship?).
The fertilizer is part or all a byproduct of final 0-3mm processing into 1-3mm. So nothing is really wasted -just the overburden.
What those who worry about the timing of the 3rd shipment are overlooking is that THREE different products are being dealt with now. So value is being built everyday and as the processing is finished for each stockpiled product they could be in a position to ship back to back ships within a relatively short time period.