LOVIMAG Strong Magnets with Holes, 40 Pcs Small Rare Earth Magnets, Strong Neodymium Disc Countersunk Hole Magnets for Refrigerator, Office, Tool Room, Science Projects(Disc-12x3mm, Hole-4mm): Amazon.com: Industrial & Scientific
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How to separate strong magnets- supermagnete - YouTube
LOVIMAG Super Strong Neodymium Disc Magnets, Powerful Rare Earth Magnets with Double-Sided Adhesive for Fridge, DIY, Building, Scientific, Craft, and Office Magnets - 1.26 inch x 1/8 inch, Pack of 5: Amazon.com:
Magnets sustainably separate mixtures of rare earth metals | Penn Today
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