William needed them to hammer, then return the mix into the ovens again, before hammering it once more.
They kept doing this for two days, cleansing the melted ores until a dimly shining silver melted liquid appeared.
"It's not the best result, but this will do," he then turned all of a sudden towards the high-end masters around, "Bring me the army leaders, all the high-end masters, they need to do something for me."
They didn't get what he wanted them to do, but when they arrived, he said something weird.
"I want you to drop your blood here, over these," he pointed at thirty melted semi-solid liquid on trays, waiting for them to do this.
"What do you mean?" they asked in doubt, but he simply explained things over to them.