O le laʻititi laʻititi, e amata mai i le 75mm i le 225mm, o la matou graphite electrode ua faʻatulagaina faapitoa e faʻafetaui ai manaʻoga o alamanuia e pei o le faʻafefeteina o le calcium carbide, gaosiga o le carborundum, faʻamamaina o le corundum paʻepaʻe, le faʻafefeteina o uʻamea e le masani ai, ma le Ferrosilicon plant refractory manaoga.