getting well ahead of myself, but thinking of a hypothetical...

getting well ahead of myself, but thinking of a hypothetical company with similar characteristics to pluton.
just some back of envelope calcs...
assume $80 profit per tonne of ore.
assume load capacity of 180 000tonnes per ship.
assume 20 million tonnes resource.
a ship leaving the berth every month with $15 mill on board for nearly 10 years.
profit and tonnage conservative figures.

for memory tony mentioned cost per tonne and the number was well south of 20 bucks a tonne.