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Science → Physical sciences → Earth sciences → Geology
ANSWERS: 2
  • H_mood
    Deepest mining operation according to Wikipedia: http://en.wikipedia.org/wiki/TauTona 3.5km, gold mine in South Africa Deepest drilling: around 12km: http://hypertextbook.com/facts/2003/AdamCassino.shtml
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  • Stableboy
    That honor belongs to the Mariana Trench, which is a big hole in the ocean that goes 10.9 km below sea level. It was first explored in 1951 by the Royal Navy. http://en.wikipedia.org/wiki/Mariana_Trench
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