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Pit Terminology - Glossary - Mines Rescue

Pit Terminology - Glossary Glossary of words that are generally specific to the mining industry: Some have a two or three fold meaning, some have gone out of use, some are local to Derbyshire, Leicestershire, South Yorkshire and to Nottinghamshire, and others ...

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Tunnel boring machine - Wikipedia

In hard rock, either shielded or open-type TBMs can be used. Hard rock TBMs excavate rock with disc cutters mounted in the cutter head. The disc cutters create compressive stress fractures in the rock, causing it to chip away from the tunnel face. The excavated ...

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