sulatusahju (vagranka, kõrgahi jms) osa sulametalli kogumiseks ja keemilise koostise ühtlustamiseks (vt vagrankakogur), a ladle placed in front of the cupola or blast furnace into which all metal is tapped; it acts as a mixer and reservoir and to smooth out metal flow to the pouring area (see: cupola forehearth)