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Russia: Since 2019, more than 130 km of tunnels have been laid for Moscow metropolitan subway
Most tunnels were built with Tunnel Boring Machines. Most common tunnel diameter is 6 meters, although some built in 10 meter diameter.
cover tunnel photo by: Matt Brown from London, England / CC BY
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За пять лет в Москве построили более 130 км метро – новости на сайте Novostroy-M.ru
www.novostroy-m.ruЗа пять лет в Москве построили более 130 км метро