Copper Residue, Sludge, Ash, dross, Slags, Nickel Residue, Cobalt Residue, Tin Residue, zinc Sludge, Molybdenum Residue, Catalyst, Minor Or Rare Earth Metal Residue, Precious Metal Residue, Concentrate, Sludge, Silver, Indium, Gold, Platinum, Brass Ash, Residue, Non-ferrous Residues.