Blast Furnace

The product of the grinding would not right away be taken to its destination, for this product still contained one last impurity.

And to remove this, the cart would be taken to a separate station a bit further from the machine and about fifty workers would scamper into the cart, carrying buckets on their backs, and then start quickly shifting through the crushed ore.

They did this to retrieve the make iron balls that were used to grind the ore and though some balls were inevitably lost, close to 95% retrieval was possible for these expert men.

'Hmmm, I should invent the magnet. I will need it to make the compass anyway,' Alexander made a mental note as he watched the diligent workers shifting through the black coke and turning their faces and hands pitch black in the process.

While this was going on, the empty machine was being filled up in a novel way others had never seen before.