see my handle so where the fuck to start go to a bunch of scrap yards, someones "door yard", like mine, where as a matter of course, bits and chunks of most metals end up as part of building and repairing, to larger operations that are huge, fast paced with prices and markets changing by the hour, and cash is used as the entisement to get people to bring metal in on everything from bicycles to the biggest rigs on the road, a cacophany of heavy equipment like car shredders, that reduce a full sized car to hand sized bits, and seperate out the more valuable metals, and waste plastic, grrrrrank!, done it's a wild, dangerous madhouse populated by characters that will most defintly get your attention, which is a mistake, because you dont want thiers. then there are hundreds of thousands of small to medium sized businesses that generate several hundred tons of scrap per year in acompletly normal, organized, boring fashion, except for when it gets dropped, and the expected and tolerated losses to dumpster diving. I could go into much greater detail as to how it works, the safeguards to prevent theft that are in place, but as in the case of guardrails say, the problem is that, legitimatly scrapped guardrails come in every day, or hyway crews just leave crash damaged ones lay beside the hyway when they fix the rails, 1 they are too busy, and 2 they know the bent ones spontainoiusly disapear, the scraped one is worth $17.26......nobody is doing extra paper work for that, right we are talking millions of tons pe anum of material moved in a completly random ad hock manner, dont take it the wrong way, but... go the fuck ahead bub, you fix it I'll watch