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tunnel boring machine
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The L9 tunnel boring machine will drill again in the fall.
Natàlia Vila
10-07-2025
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![Piece of the tunnel boring machine that arrived at the Mandri shaft this Wednesday](data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 9"%3E%3C/svg%3E)