Bertha from newly-formed UGITEC's site
https://ugitec.co.jp/en/products/largest/
⌀17.45m EPB TBM Completion of factory assembly Group photo in front of the TBM Completion of excavation Project outline Construction nameState Highway 99 Tunnel ConstructionConstruction siteSeattle, Washington, USAOwner nameWashington State...
https://ugitec.co.jp/en/products/largest/
World Largest Class TBM
ugitec.co.jp⌀17.45m EPB TBM Completion of factory assembly Group photo in front of the TBM Completion of excavation Project outline Construction nameState Highway 99 Tunnel ConstructionConstruction siteSeattle, Washington, USAOwner nameWashington State...