Quote from oldtime:
at one time it was a very hopping place. Now it is like a ghost town. But that is still where the copper from Mexico comes into the U.S.
You can still see some old mines on the US side down there, but they are not worked anymore and are vacant.
No, I know of no big copper on the black market.
You know how big a coil of copper is? It's like 42000 pounds. Kind of hard to sneak that around without getting caught.
But the recycling market is pretty crazy. You'd be surprised how much trash you throw away has copper in it. And really, that is one of the cheapest ways to get copper. All those trashed out semi trailers that are no longer road worthy have a lot of copper in them.
Scrappers call them selves treasure hunters...