Iron is obtained from iron-ore through
smelting.
Unwanted side elements
(sulphur, phosphorus) must be burnt off at temperatures up to 2000º
C.
Simple smelting was done in a pit filled with iron-ore and charcoal.
Natural draught was supplemented with a
system that blasted air through the pit.
Iron ran out of the ore in a doughy mass.
Although very different than working with bronze, weapons, knives and tools
made of iron were vastly superior to their bronze counter parts.
The Romans appear to have been the earliest mass users of Iron in everything
from cutting and shaving knives to sickles, scythes and ultimately scissors
with springs.