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Mponeng gold mine - world deepest mine 4,1 km underground

Name: Mponeng gold mine - world deepest mine 4,1 km underground
Uploaded: 2015-05-24T18:35:05.000Z
Description: Mponeng gold mine - world deepest mine 4,1 km underground http://mi.ttu.ee/mponeng/

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Platforma: YouTube
Adaugat: 24 mai 2015

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Mponeng gold mine - world deepest mine 4,1 km underground http://mi.ttu.ee/mponeng/