anchor: hm yeah uh we have places where we go and we what we do is we unload our cans it's like a conveyor belt and the belt um separates the aluminum ones from the steel ones because of it has a magnet on it and then they weigh all your aluminum cans and then you get money for your aluminum cans
positive: the conveyor belt uses a magnet to pick out the aluminum cans from the steel cans
negative: the belt can't tell the difference between steel and aluminum cans