Roof Slot Cutting Mining Machine India

Tunnel boring machine wikipedia 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 strataey may also be used for microtunnelingey can bore through anything from hard rock to sandnnel diameters can range from one metre 3ft done with microtbms to 17 metres 58 ft to date.

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