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The same company built the world's largest-diameter slurry TBM, excavation diameter of 17.6 meters (58 ft), owned and operated by the French construction company Dragages Hong Kong (Bouygues' subsidiary) for the Tuen Mun Chek Lap Kok link in Hong Kong.
Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
The TBM Mary Ann started boring in August 2023 from an underground box structure, measuring 160 m × 30 m × 15 m (525 ft × 98 ft × 49 ft), from the eastern portal at Water Orton towards the 22 m (72 ft) deep portal at Washwood Heath. This was followed by TBM Elizabeth in March 2024. [5] [16] [17]
The Boring Company (TBC) is an American infrastructure, tunnel construction services, and equipment company founded by Elon Musk. TBC was founded as a subsidiary of SpaceX in 2017, and was spun off as a separate corporation in 2018. TBC has completed one tunneling project that is open to the public, as well as multiple test tunnels.
The company works with the mining, transport and energy sectors, building TBMs for road, railway, metro and utilities construction. [25] In mining, it offers a range of automation technology including underground vehicles, conveyor belts and monitoring systems, and shaft-drilling equipment. [26]
The decision whether to construct a tunnel using a TBM or using a drill and blast method includes a number of factors. Tunnel length is a key issue that needs to be addressed because large TBMs for a rock tunnel have a high capital cost, but because they are usually quicker than a drill and blast tunnel the price per metre of tunnel is lower. [ 2 ]
Major food companies, including Kraft Heinz, Mondelez and Coca-Cola, were hit with a new lawsuit in the U.S. on Tuesday accusing them of designing and marketing "ultra-processed" foods to be ...
Teesside Beam Mill (TBM) is a steel reheating and rolling plant located at Lackenby, on Teesside, North Yorkshire, England. The plant was set up in the 1950s by the Dorman Long company and began full production in 1958, making beams for building projects. The plant produces around 750,000 tonnes (830,000 tons) of steel products per year, and is ...