huge discounts world's biggest tunnel machine bertha emerges from beneath

huge discounts world's biggest tunnel machine bertha emerges from beneath

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  • The World's Largest Tunnel-Boring Machine Must Be Saved

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  • World’s largest tunnel-boring machine finally breaks through

    SEATTLE — The world’s largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled journey, a milestone in a multibillion-dollar project to replace an aging highway hugging the city’s waterf

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About KAMY

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.