In April 2019, a Robbins 3.5 m (11.5 ft) diameter Main Beam TBM broke through into open space, completing its 2.8 km (1.7 mi) long tunnel. It was not the first time the machine had encountered open space: twice during tunneling, the machine hit uncharted [...]

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On February 28, 2019 a ceremony was held to mark the breakthrough of a machine proven in both soft ground and hard rock. The 8.93 m (29.3 ft) diameter Robbins EPB and continuous conveyor system completed what is arguably one of the most difficult legs of [...]

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Excavation of Turkey’s longest water tunnel came to an end on December 18, 2018. To get there, a 5.56 m (18.2 ft) diameter Robbins Crossover (XRE) TBM and the contractor JV of Kolin/Limak had to overcome dozens of major fault zones and water pressures u [...]

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On October 4, 2018, onlookers watched as a 3.8 m (12.5 ft) diameter Robbins Main Beam TBM completed its epic journey. The TBM, christened “Driller Mike”, after local rapper and activist “Killer Mike”, overcame extremely hard rock conditions along [...]

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A 13.7 m (44.87 ft) diameter Robbins Slurry machine launched on September 18, 2018 in Hiroshima, Japan. The massive machine is the country’s first foreign-made large diameter Slurry TBM to excavate hard rock in Japan. [...]

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