as long as there is .0017 percent copper in the railcar or truckload then its considered #2 shredd which is what the majority of mills buy. There is no assay done on it they have downstream systems to take all the copper, aluminum, stainless and trash out of it. Trust me the yard wants to recover as much non ferrous as possible. If you shredd 600 to 1000 ton of material in a day and you can recover all the material out of the fluff you can then you are maximizing your shredders potential. Scrap yards spend 100,000s of thousands of dollars just so they can recover 1 to 2 percent more of the non ferrous material out of there fluff. Why send it to the landfill when you can recover it and get paid for it. Think about what 1 to 2 percent of 600 tons is its an extra 2 grand or more of material a day.
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