Ages ago I borrowed one of the books about it from the library, though only recently wondered how they got it out.
http://en.wikipedia.org/wiki/Russian_submarine_Kursk_(K-141)
Part 1
Part 2
And the latter half of this video has the potential cause theories
http://en.wikipedia.org/wiki/Russian_submarine_Kursk_(K-141)
Part 1
Part 2
And the latter half of this video has the potential cause theories
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