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The Deepest Hole Ever Drilled

When Soviet scientists tried to drill the deepest hole ever, in 1989, they were hoping to get down to 15 kilometres. They managed 12 kilometres, and that record still stands. Lucy Williamson has been talking to one of the men involved.

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10 minutes

Last on

Mon 24 May 2010 22:50GMT

Broadcasts

  • Mon 24 May 2010 04:50GMT
  • Mon 24 May 2010 07:50GMT
  • Mon 24 May 2010 10:50GMT
  • Mon 24 May 2010 22:50GMT

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