For more information about mold makers, see CIS occupations. Melters gather information about the coal and other materials that will be heated. They vary the amount of ingredients to fit the type and quality of steel they will produce that day. Melters direct the loading of raw materials into the furnace. In addition, melters supervise the taking of samples from the liquid iron.
Blowers are the workers who direct the operation of the furnace.
They supervise furnace workers and are responsible for the quality of the iron. Furnace operators use controls to tilt the furnace when receiving coal and other materials. They also control the flow of oxygen into the fire by adjusting levers and buttons. After samples are taken and analyzed, operators and melters may add to the contents of the furnace or change the heat. They signal crane operators to position the pouring nozzle over the molds.