Related Clues:

• Smelting byproducts
• Smelting leftovers
• Smelting residues
• Forms a residue when smelting ore
• Smelter wastes
• Smeltery wastes
• Denigrates, in British slang
• Becomes smelting waste
• Steel impurities
• Converts into metallic waste
• Forms into metallic waste
• Leftovers from smelting