Ah, that Hall-Heroult process — they use a huge electric current to pull aluminium out from that red ore, bauxite, right? The electrode reactions... taso, one makes the metal and the other makes oxygen, but it eats up the carbon anodes fast. My uncle worked in that plant outside town, and he came home coughing grey dust, saying the real reaction is your life for a steady salary. So I'll stick to bamboo, where the only smoke is from curing the flute over a gentle fire.
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