The new breed of meatball separators removes these copper-containing devices from the ferrous stream, but for them to work, the meatballs must be in the ferrous stream in the first place. That's not always the case, however. The electro drum magnets that most yards use to separate ferrous and nonferrous streams don't reliably attract them because of their weight (they're often heavier than oiher ferrous shred of that size), their high copper content, and their spherical shape. Meatballs are "the most difficult type of object to capture magnetically," says Tim Shuttle-worth of Erlez Manufacturing Co. (Erie, Pa.), a manufacturer of magnetic equipment.
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