Modern Marvels

Season 17 Episode 7

Secret Underground

1
Aired Wednesday 10:00 PM Dec 10, 2010 on The History Channel

Trivia

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  • Trivia

    • The Homestake Gold Mine in South Dakota is currently home to a nuclear research lab 4800 feet below the surface. But a proposed "Deep Underground Science and Engineering Lab" would extend the site to more than a mile and a half below the surface.

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