Boilers used to boil the ore and PLC ,scada based machines are used in boiling point. And comming to metal cooling here also automatically work is done by PLC and HMI. after boiling , the metal get cooled and cooled metal is given to the cutting machines to make them a given shape. After cutting shapes the material should be packed and filled in container..all these process are done on conveyer belt with automation machines based on PLC scada DC's programs