Well if you are already in the purifying ores business it would be better than what they usually work with. It would serve as a laundering step - it isn't stole

Well if you are already in the purifying ores business it would be better than what they usually work with. It would serve as a laundering step - it isn't stolen catalytic converters with serial numbers or ones with their numbers filed off, it is generic low quality scrap metal now.