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TBM Bertha o średnicy tarczy wynoszącej 17,5 m
Opublikowano: 19.11.2014
Seattle, USA
TBM Bertha, maszyna o największej średnicy w Ameryce Północnej (17,5 m), w 2012 r. rozpoczęła drążenie tunelu o długości 3 km w ramach projektu Alaskan Way Viaduct w Seattle.
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Nieznajomy Opublikowano: 20-11-2014 08:55:02Wygląda ładnie, szkoda, że nie działa!
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