Aluminium was rare and precious because the method of extracting the metal from the ore was expensive. After 1886, when Charles Martin Hall discovered it could be extrated through electrolysis, the process (and the material) became much cheaper.
I'm not an expert, but you can learn a lot from a little bit of searching and a Civilopedia entry.:)
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It is if it's the last one. Otherwise we wouldn't have all this new year fuss.
When I first saw the blurb, I thought it said "under-table lube network"
Time to take a break from the computer...
Aluminium was rare and precious because the method of extracting the metal from the ore was expensive. After 1886, when Charles Martin Hall discovered it could be extrated through electrolysis, the process (and the material) became much cheaper.
:)
I'm not an expert, but you can learn a lot from a little bit of searching and a Civilopedia entry.