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seattle amp 39 s bertha tunneling seattle amp 39 s bertha tunneling machine With many years of production experience installation experience of millions of equipment units and a large amount of R D investment our roadheader is suitable for crushing operations of various metal mines equipped with a national patented scraper

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A tunnel boring machine used to excavate the Gotthard Base Tunnel the world s longest rail tunnel A tunnel boring machine that was used at Yucca Mountain nuclear waste repository A tunnel boring machine TBM also known as a mole is a machine used to excavate tunnels with a circular cross section through a variety of

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Welcome to Seattle Bertha World s largest tunnel boring Welcome to Seattle Bertha Coming all the way from Osaka Japan the world s biggest tunnel boring machine arrived on the Seattle waterfront this afternoon

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Seattle s tunnel machine Bertha breaks through It s official has broken through Seattle s tunnel boring machine that s been digging beneath the city for the State Route 99 tunnel reached the end of its mile journey Tuesday nearly four years after it embarked on the job

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Seattle s Big Tunneling Machine Is Back on Track We ve covered the saga of the SR99 tunneling machine better known as Bertha since it broke down after only

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Bertha tunnel boring machine Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka Japan and is the world s largest earth pressure balance tunnel boring machine at a cutterhead diameter of feet m across

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A tunnel boring machine TBM also known as a mole is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock may also be used for microtunneling

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Bertha tunnel boring machine Bertha was a 57 foot diameter m tunnel boring machine built specifically for the Washington State Department of Transportation s WSDOT Alaskan Way Viaduct replacement tunnel project in Seattle

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Musk has said he s working on tunnel boring machines TBMs than can simultaneously dig up and reinforce From Big Bertha in Seattle to Mum Chung in San

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The World s Largest Tunneling Machine Is Finally Bertha the world s largest tunneling machine has been stuck under downtown Seattle since it broke in December 2024 Engineers have had to concoct a massive and expensive rescue plan—essentially a whole construction project in itself And yesterday the Bertha s