Rourkela Steel Plant was the first in Asia to adopt the LD steelmaking process and the first in India to use external desulphurization. It is also the only plant where 100% of slabs are continuously cast. The steelmaking process in SMS involves charging hot metal, scrap, and fluxes into converters where oxygen is blown to remove impurities through oxidation, producing slag. Molten steel is tapped and further processed before continuous casting into slabs. Waste gases are captured and recycled while dust and slag are also recycled in the process.