<P> Using the Bessemer process , it took between 10 and 20 minutes to convert three to five tons of iron into steel -- it used to take at least a full day of heating , stirring and reheating to achieve this . </P>
<P> Using the Bessemer process , it took between 10 and 20 minutes to convert three to five tons of iron into steel -- it used to take at least a full day of heating , stirring and reheating to achieve this . </P>
who came up with a quicker way to make steel
who came up with a quicker way to make steel
Bessemer
Bessemer