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How It's Made: Class and Championship Rings
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Identifying, Melting and Casting Bars of English Pewter Metal
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The "Impossible Torpedo" was real
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How Conga Drums, Steel Drums, Snare Drums, and Drumsticks Are Made | How It's Made | Science Channel
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Why Don’t Railroads Need Expansion Joints?
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I Saved an Electron Microscope from the Trash
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The Hidden Engineering of Landfills
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