Grand Paris Express - The first tunnel boring machine breakthrough from Swiss construction giant Implenia.
https://www.blick.ch/news/wirtschaft/historischer-durchstich-fuer-implenia-in-frankreich-blick-war-dabei-schweizer-koloss-frisst-sich-durch-paris-id15781264.html
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Implenia celebrates breakthrough in southern tube of Albvorland tby he WANDA tunnel boring machine.
Implenia has been commissioned by Deut...ern tube by TBM Wanda marked the successful end of Implenia’s drilling work on the Albvor...