Modern Marvels

Season 13 Episode 14

Drilling

0
Aired Wednesday 10:00 PM May 10, 2006 on The History Channel

Trivia

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  • Trivia

    • In the 1970s, 80s and 90s, Russia drilled the Kola Superdeep Borehole. At more than seven miles, it's the deepest hole ever drilled, but if failed to reach the Moho Layer.