Roadheader

tbm roadheader machine coal mine tunnel

impact roadheader of gypsum - hbindustries.in

Roadheaders (Dosco twin boom) with the experience and background from undergroundSelective mining of thin horizontal gypsum layers with different qualitiesEliminates the hazards of blasting and environmental impact arising out of it.

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Tunnel boring machine - Wikipedia

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 may also be used for microtunneling.

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