kamy roadheaders

Tel No. +86-21-57674157

bertha, seattle’s tunnel boring machine, is

Quality Inspection

Technology led the establishment of the quality assurance after-sales service, improve the management system.

Production License

Production license of the product ensure that the license number, approval date and expiration date.

Product Packaging

Product packaging in line with national regulations, due to packaging damage caused by the products borne.

After-sales Service

Any difficulties encountered by customers, we will do our best in the first time to provide perfect service.

Bertha (tunnel boring machine) - Wikipedia

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 ...

How did we get here? A look back on Seattle’s tunnel ...

Follow Bertha Thank you for following Bertha. The SR 99 tunneling machine, nicknamed Bertha, has completed her work. For the latest tunnel progress, visit our new tracker page. An …

Alaskan Way Viaduct - Follow Bertha

Why Seattle's Huge Tunnel-Boring Machine Is Still Stuck A year after Bertha got stuck, plans to free the big machine have stalled. And there's another problem.

Seattle Tunnel Boring Machine -- Bertha Rescue

4/4/2017 · 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.

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

12/20/2013 · 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 ...

Seattle's Big Bertha Tunneling Machine Is Finally Back on Track. After three years and millions of dollars in repairs, the SR99 tunneling machine in Seattle has resumed operations.

Under Seattle, a Big Object Blocks Bertha. What Is It ...

The Bertha tunnel boring machine was so large that WSDOT conducted a tour inside of it, complete with catwalks, ladders, stairs, a control room, and several break rooms. Despite its size, the Bertha tunnel boring machine is automated, only requiring 25 people to operate it most of the time.

Seattle's Big Bertha Tunneling Machine Is Finally Back on ...

Watch Bertha, the world’s largest tunnel boring machine, emerge from beneath Seattle. ... Bertha the SR 99 tunnel machine headed out of the muck and into daylight on Tuesday, completing a final ...