Magnetically separating gold - GIF

Magnetically separating gold.

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Previously:

$ 3 billion gold bullion - photo
15th century gold-inlaid poleaxe - photo
Cone crusher crushing gold and copper ore - GIF
Gold leaf gilding a beam - GIF
Rolex Cellini gold coin watch - GIF

Gold is not magnetic, so this is seperating magnetic materials and passing the non-magnetic material. The non-magnetic stuff might be gold, and it might be any other stuff that is not gold...