When all the slag has flowed from the furnace, the crane lifts the ladle and carries it while the steel is teemed into the moulds, just as shown in Fig. 25. Small pieces of aluminum are thrown into each mould with the steel, reducing a part of any remaining iron oxide it may contain. The aluminum also assists further to remove gases, which would cause blowholes in the steel.

The ground space adjacent to the row of furnaces on the tapping side is called the "casting pit." A long narrow pit is usually dug for holding the tall moulds in order that the workmen may remain at the ground level when performing their work during pouring.