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clonedbeef (Mining)
5 Dec 10 9:47
Is anyone aware of any situation where a cultures survival depended on it's ability to mine a certain substance?

It's for fictional purposes so I'm not looking for oil or potash but something more obscure that a small civilization may have to look across the world to find what they are looking for.

Thanks.
micalbrch (Mechanical)
6 Dec 10 6:38
Sounds like homework.

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