Step 13: Throw Away Caps
Really? You sure? I would have thought that the bottles were all just remelted together and the slag poured off and the water evaporated out. Either way, remove the cap, as the cap does not appear to be the same material as the rest of the bottle. At least it's not the same color as the rest of the bottle. I would recycle it anyway, since if they don't need it, they'll get rid of it.
Maybe it doesn't matter.
Theburn7 answers Rishnai:
I reassure you, these caps are a different type of plastic which aren't used for much except for... Caps! Sure, OK, you can recycle them, just not twisted on the bottle. This step is more important than most people think so.