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tunnel borer machine

tunnel borer machine

Atunnel boring machine(TBM) also known as a “ mole “, is a machine used to excavatetunnelswith a circular cross section through a variety of soil and rock strata. They can bore through hard rock, sand, and almost anything in between. Tunnel diameters can range from a metre (done with micro-TBMs) to almost 16 metres to date

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