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(keypad beeping) Entrance security is still evolving today, there are countless ways to keep a door shut and the world's most famous vault is at Fort Knox
Full Transcript
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(keypad beeping)
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Entrance security is still evolving today,
00:00:07.241 --> 00:00:10.244
there are countless ways to keep a door shut
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and the world's most famous vault is at Fort Knox.
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Movie Summary
A fascinating look at how modern day structures and engineering technologies have been inspired by ancient discoveries.