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Most tunnel boring machines operating simultaneously in a single project

Most tunnel boring machines operating simultaneously in a single project
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Who
JSC Mosinzhproekt
Where
Russian Federation (Moscow, Russian Federation)
When
18 March 2020
The most tunnel boring machines operating simultaneously on a single project is 23 achieved by JSC Mosinzhproekt (Russia) in Moscow, Russia on 18 March 2020. The tunnel boring machines were used in a Moscow metro project.