the Iron Ore is what is used in making the steel, the ore comes from northern Mn mines and is shipped in rail car’s to Duluth then loaded in to ships to the lower lakes and to the mills in winter the ore is stocked piled at the mills for used in winter and stocked piled in duluth for spring shipping season
My Just-In-Time comment referred to Pointy-Headed Nerd guy convincing upper management to wait AS LONG AS POSSIBLE before taking in those shipments, that way you’re not burning money that you could be earning 0.07% per year on (at least at my bank, and no, I don’t mean 7%).
In other words if Superior is expected to freeze over on December 4th, then have the final shipment come in December 3rd, so that money could be put to good use somewhere else (LOL). Too bad, the lake froze November 25th instead - now HUGE losses.