Back in September 2015, the Guinness Book of World Records published a new record that inspired awe in the tunnel construction industry. During the construction of a railway metro line in Qatar, Doha, as many as 20 tunnel boring machines operated simultaneously as part of a single 113-kilometer metro railway line project. While this was a phenomenal achievement, the record was broken on March 18, 2020 in Moscow when 23 tunnel boring machines dug metro tunnels in Moscow. …

Ruslan Baisarov

Russian industrialist. Infrastructure projects and venture capital financing #Russia #Baysarov

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