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== Eksteraj ligiloj ==
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* [http://www.losapos.com/openpitmines The biggest, deepest and deadliest mines in the world] {{Webarchiv|url=https://web.archive.org/web/20111104072258/http://www.losapos.com/openpitmines |date=2011-11-04 }}
* [http://www.mining-technology.com/features/feature-top-ten-deepest-open-pit-mines-world/ Deepest open pit mines]
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