How United States Steel changes iron ore into steel

This video from United States Steel shows all the steps needed to produce steel, from the mine to the final coils of steel sheet. To make steel, Iron ore and other iron bearing materials, coke, and limestone are charged into the blast furnace from the top and work their way down, becoming hotter as they sink in the body of the furnace.

At the bottom of the furnace, temperatures rise to well over 3000°F. Molten slag floats on a pool of molten steel that is four or five feet deep. Because the slag floats on top of the steel, it can be drained off through a slag notch in the furnace. The molten steel is released from the furnace through a tap hole, and from there is processed into slabs and sheet.