RMR

Common metals; common metal alloys; copper ingots; copper-base alloy ingots; the foregoing for use as official currency, or for use in the manufacture of official currency

Precious metals; refined precious metals; gold; gold bullion; gold ingots; collectable and commemorative gold bullion coins; gold and its alloys; silver; silver ingots; silver and its alloys; platinum; platinum ingots; platinum and its alloys; collectable, commemorative and non-monetary coins; medals; medallions; the foregoing for use as official currency, or for use in the manufacture of official currency

Refining of precious metals; refining of common metals; the foregoing in the field of official currency