The PO 3 Plank Wagon was a staple fixture for each one of the locomotives and stations in constant need of fuel and supplies. Bauxite is an aluminium-rich ore used for the manufacture of aluminium (metallurgical bauxite) and refractory products, chemicals or cements. Bauxite is a prime important raw material for the primary aluminium industry. It is also used in a number of non metallurgical sectors, like refractory, abrasive, cement, steel making and chemicals. This Wagon's rich ore cargo suits a locomotive or other wagons as well.