I'm just looking for 20,000 metric tons of scrap steel to send to VietNam???? Other than that when I was working for a construction company right after college the jobsite was a housing project that was built in the 1940's and they had copper gutters, downspouts, and awnings on every building. I got extremely lucky and got the sub contract to haul off all of that "scrap material" since it was being replaced with aluminum. This was 1996 and I made a killing on it at the scrap yard. I made enough in three months to pay cash for a brand new 1996 Toyota Camry for my wife that was fully loaded. We even pulled down all the awnings, gutters and down spouts from buildings that were not scheduled to be redone for another 6 months but no one ever questioned us about it.
BTW it still happens here that people go after old copper. I helped a guy on a contract when he bought the scrap copper at a bunch of old drive in theaters. We had to jackhammer all the lines out of the pavement that went to the speakers; to get it all up then we left the place just standing there stripped bare.