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Hydraulic Brake EP03A

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Roadheader Connector

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Roadheader Connector

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MER1500 Hydraulic Rotary Digger

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Mining Screw Grouting Machine

  • Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

    Now the Seattle tunnel boring machine is finally back on track. It just broken through an access repair tunnel and has since mined 73 feet since December 22.

  • Troubles with India's tunnel machine – also built by Bertha ...

    Mar 17, 2015 · The cutter head of a tunnel-boring machine is broken, resulting in a government tunnel project being months behind schedule. But this time, the broken tunnel-boring machine isn't Bertha.

  • Tunnel Boring Machines | The Robbins Company

    If you are planning to tunnel through ... Tunnel Boring Machines Products. ... Ultimately every contractor wants the best machine possible to complete the project on ...

  • Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done ...

    Apr 03, 2017 · Bertha has broken through. After nearly four years underground, Seattle's beleaguered boring behemoth clawed its way into daylight yesterday, leaving a 1.7-mile tunnel behind it.

  • Seattle tunnel machine Bertha reaches halfway point — here's ...

    Seattle tunnel machine Bertha reaches halfway ... The receiving pit at the north end of Seattle's SR 99 tunnel ... The tunnel boring machine is said to be ...

  • Hard grind: The epic journey of the world's biggest tunnel ...

    On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger was tasked with the challenge of building a tunnel large enough to carry four lanes of motor traffic under the heart of Seattle.

  • Gizmag goes inside the world's largest tunnel boring machine

    On Saturday,the world's largest tunnel boring machine was dedicated in the city of Seattle. ... world's largest tunnel boring machine was ... invented by Marc ...

  • Under Seattle, a Big Object Blocks Bertha. What Is It? - The ...

    Dec 19, 2013 · In October, workers walked through the first rings of the highway tunnel being built under Seattle's waterfront toward the boring machine called Bertha.

  • Big Bertha -- world's largest tunnel boring machine -- facing ...

    Dec 24, 2013 · Named after one of Seattle's early mayors, ... Big Bertha -- world's largest tunnel boring machine -- facing big Seattle challenge CBS Evening News.

  • Tunnel boring machine: The machine that even Jules ... - ACCIONA

    These tunneling machines have participated in some of the most flagship projects of ACCIONA. Learn more about different types of tunnel boring machines.

  • Watch Bertha, the world's largest tunnel boring machine ...

    From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on ... the world's largest tunnel boring machine, ...

  • Alaskan Way Viaduct - Tunneling

    The SR 99 Alaskan Way Viaduct, an elevated concrete structure built in the 1950s and vulnerable to earthquakes, is being replaced with a 1.7-mile tunnel running beneath downtown Seattle.

  • Stuck In Seattle | Bloomberg Business - Business, Financial ...

    Stuck in Seattle The Aggravating ... her role models include "whoever invented the shovel." ... STP decided to buy the tunnel-­boring machine from Hitachi Zosen, ...

  • Bertha (tunnel boring machine) - Wikipedia

    Bertha was a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle.

  • Alaskan Way Viaduct - Follow Bertha

    The SR 99 tunneling machine, nicknamed Bertha, ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel ...

  • Front-End Of Tunnel-Boring Machine Freed From Seattle Pit : NPR

    Front-End Of Tunnel-Boring Machine Freed From Seattle Pit Engineers have removed the cutter head from the enormous tunneling machine nicknamed Bertha. The malfunctioning part had been stuck for more than a year in a highway project under the city's downtown.

  • How did we get here? A look back on Seattle's tunnel machine ...

    Bertha's end could be near. The world's largest tunnel-boring machine is on schedule to break into daylight this spring after a tumultuous dig under downtown Seattle that's years behind schedule.

  • Tunnel boring machine - Wikipedia

    A tunnel boring machine ... The first TBM that tunneled a substantial distance was invented in 1863 and improved in 1875 by ... It was delivered to Seattle, ...

  • Big Bertha's Two-Mile Subterranean Journey Is Almost Over

    More than 150 feet below the streets of Seattle, Bertha presses on, boring a 57.5-foot diameter tunnel underneath the city. The largest tunnel boring machine (TBM) in the world when it was built, Bertha weighs a gargantuan 6,700 tons and stretches 326 feet long.

  • Elon Musk's boring machine completes the first section of an ...

    Jun 27, 2017 · Serial entrepreneur Elon Musk says his ambitious tunnel-boring endeavor, aptly named The Boring Company, has officially started digging underneath Los Angeles. Musk announced the news on Twitter, where he said "Godot," the Samuel Beckett-inspired name of the company's tunnel boring machine ...

  • History of the Tunnel Boring Machine - FastMail

    History of the Tunnel Boring Machine ... A better mousetrap had been invented, ... who worked in Chicago and is now a tunneling consultant based in Seattle.

  • Seattle tunnel machine begins drilling after 2-year break ...

    Jan 06, 2016 · Seattle's tunnel-boring machine has moved past the concrete walls that make up a repair pit and has started digging into soil about 80 feet below street-level along the city's waterfront.

  • History | The Robbins Company

    In 1952 James Robbins developed the first modern Tunnel Boring Machine for the Oahe Dam Project in ... To fit their need, The Robbins Company invented the Double ...

  • Seattle's tunnel boring machine Bertha reaches end of long ...

    Apr 03, 2017 · SEATTLE — With a cloud of dust, Bertha — Seattle's tunnel boring machine — reached the end of her long, troubled journey, a milestone in a multibillion-dollar project to replace an aging highway hugging the city's waterfront.

  • Seattle Hits Another Milestone on Light-Rail Tunnel Project ...

    Chuncks of a concrete support beam fall as a tunnel boring machine, turning a 21-foot diameter cutting head, breaks through a support wall in Seattle.

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