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Quarrying is a form of mining similar to open-pit mining, involving the extraction of useful natural stone from a man-made open pit called a quarry by cutting ....

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Tunnel boring machine - Wikipedia - Know More

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...

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2 Introduction This publication sets out basic advice for carrying out Risk Assessment at Surface Mining Operations Surface mining operations are defined as ....