Copper powder.
Copper cathode.
Aluminum scrap.
Iron mill scale.
Steel drums.
Aluminum scrap.
Copper cathode.
Copper cathode.
Copper granules.
Copper cathodes.
Aluminum ingots.
Aluminum 6061 and 7075 scrap.
Steel shots.
Copper cathode.
Nickel wires.
Copper cathodes.
Copper cathode.
Aluminum ingots.
Tantalum or coltan.
Copper, aluminium, fuel.