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Electric Machines To Pass The Sand Or Earth

Tunnel Boring Machine TBM A tunnel boring machine TBM also known as a mole, is a machine used to excavate tunnels with 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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