slag in French
slag in French
scorie
Impurities formed and separated out when a metal is smelted from ore; vitrified cinders.
laitier
Impurities formed and separated out when a metal is smelted from ore; vitrified cinders.
pute
Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material.
scorie
Scoria associated with a volcano.