A naming competition for the world's largest shield tunneling machine was organized by the Washington State Department of Transportation (WSDOT).
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.
A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
The Annual Breakthroughs in Tunneling Short Course covers all aspects of conventional and mechanized tunnel design and construction in …
Each year, TBM: Tunnel Business Magazine takes a look at the coming year by polling a sampling of tunneling professionals. How is the year ahead shaping up? What are the emerging trends?
tunnelbuilder.com is the leading marketing resource for the world's tunnelling industry providing the latest project news on the world's tunnels
Tunnels and underground excavations - Future trends in underground construction: Unexpectedly rapid increases in urbanization throughout the world, especially since World War II, have brought many problems, including congestion, air pollution, loss of scarce surface area for vehicular ways, and major traffic disruption during their construction.
For decades, surface Alaskan Way stretched along the downtown waterfront, connecting travelers to the waterfront piers and providing north-south passage through downtown.
Tunnels and underground excavations: Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone.
The Higgs boson, a particle that has shaped the theories of modern particle physics, was discovered at a super collider in Geneva. It was a hugely significant moment for Big Science, one that received a Nobel Prize earlier this year—and it should have been discovered in Texas.
Vigilant Reports; The Opening Ceremony of the World’s Largest Tunnel Was a Bizarre Occult Ritual
IBM X-Force provides deep security research expertise and global threat intelligence for enhanced security solutions.
The World's 30 Most Impressive Megaprojects. The biggest and boldest projects on the planet.
News and updates about the current situation in Iran. Ongoing relations between Israel and Iran, Iran Syria, internal and political situation in Iran.
Cicada Mania is dedicated to teaching you about cicada insects, their life cycle & life span, how they make their sound, what they eat …
Virtual Mine Expo, Min Electrical page. 3M Mining Worldwide : 3M offers innovative and differentiated solutions for saving time and money on splicing and terminating cable and wire in industrial construction projects. This includes solutions to identify, label, connect, seal and splice a wide array of low to high voltage wire and cable. 3M is ...
We are known for customising equipment to the exact needs of our customers and provide effective, long term and simple solutions to complex problems through our hardy and versatile machines.
News about Sentinel Capital Partners, a leading middle market private equity firm
On November 27, 2004, the Navy undertook "the initial flight... to try to locate the wreckage of the George 1," the plane that crashed in 1946.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.