Collections: Iron, How Did They Make It? Part I, Mining ...
18/09/2020· As for the ratio of iron ore to finished iron, as far as we can tell, ancient iron working was a lot less efficient than modern iron working. From raw ore to finished goods, the estimates range from 8 16% of the mass of the ore ends up in the finished product. Not quite enough to explain the discrepancy, but still a big gap from modern figures.
