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S3, E3: How do they fix the mast on top of the Empire State Building? Plus, how do they extract copper from the largest man-made hole in the world?

Documentary · 1 Oct 2020 · 20 min

Information

Released
2020
Run Time
20 min
Rated
U

Languages

Original Audio
English
Audio
English (United States)
Subtitles
English (United Kingdom) (SDH)