Did you know? Length of the Suez Canal (193.3 km) is 2.5 x Length of the Panama Canal (77 km)
Depth of the Mponeng Gold Mine (South Africa) (3.9 km)
/fact/depth-of-the-mponeng-gold-mine-south-africa
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"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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