Tunnel boring machine - Wikipedia
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 strata.They may also be used for microtunneling.
Tunnel Boring Machines | The Robbins Company
The Best Products for Tough Jobs You won’t be alone when you buy a Robbins TBM. If you are planning to tunnel through rock, you want a TBM from a manufacturer who will support you as your partner throughout the project, anywhere in the world.
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Tunnel-boring machine will help complete Anacostia River ...
On Thursday, leaders christened a tunnel-boring machine that will dig a 5-mile path from RFK Stadium to R Street to help complete the Anacostia River Tunnel System.
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Bertha (tunnel boring machine) - Wikipedia
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 57.5 feet (17.5 m) across.
The World's Largest Tunnel-Boring Machine Must Be Saved
The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, leaving the city's planned waterfront renaissance hanging in the balance.
CBBT Tunnel Boring Machine (TBM)
Latest News CBBT Announces Winning Name for the Parallel Thimble Shoal Tunnel Project's Tunnel Boring Machine CAPE CHARLES, VA – The Chesapeake Bay Bridge-Tunnel (“CBBT”) and its partners on the Parallel Thimble Shoal Tunnel Project are excited to announce the winning...