This large factory was founded in 1934 for the production of refractory bricks. The raw material consisted of magnesite, an extremely refractory material that has the capacity to withstand up to very high temperatures (around 3000 °C). The bricks were made through the sintering of the magnesite through a large rotating oven and then cooked at high temperatures (up to about 1800 °C) in order to create the crystalline magnesium oxide (MgO). The bricks were then used to coat blast furnaces, converters for steelworks and other furnaces, or thanks to their heat storage properties, used as accumulation cores.