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The deepest mines in the worlds

The Burj Khalifa in UAE is the tallest building in the world, it is 828 metres high. But if you place it on the bottom of the TauTona mine in South Africa, then you can successfully put 5 more buildings like this on top of it one by one…

Аватоматическое метро в мире

Automatic trains in metro — what is it? Where?

Automated metro systems have proved to be an effective urban decision worldwide. According to the data from July 2016, 55 completely automated metro lines exist in 37 cities of the world. The total length of these lines is 803 km – it is 14.2% longer, than in 2014…

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