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When I was a kid, I remember my grandfather taking me to a friend of his, or maybe it was my uncle (I was really young). The guy took old car parts and put them into a barrel with a hole and a sluice cut in the side. He then turned on this turbo pump that torched the inside of the barrel, kind of like a miniature blast furnace. Within a few minutes there was aluminum pouring down the spigot and into molds that formed the metal into ingots.
I thought it was pretty cool, and I can only guess it was pretty profitable.
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If ignorance is bliss, you must be having an orgasm.
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