Steel

Juz coal mixed with iron ore in the smelter
and 1 higher tier of steel tools which are more efficient..
or maybe if it is too easy to get steel compared to iron;you maybe have to fill the smelter with 13 iron BARS and 12 coal for 1/2/3 steel bars...
and 1 higher tier of steel tools which are more efficient..
or maybe if it is too easy to get steel compared to iron;you maybe have to fill the smelter with 13 iron BARS and 12 coal for 1/2/3 steel bars...