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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Drilling machinery: Drilling machinery,, equipment used to drill holes in the ground for such activities as prospecting, well sinking (petroleum, natural gas, water, and salt), and scientific explorations.

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Pit Terminology - Glossary

A. AB15 - Anderson Boyes steel rope hauled 15 inches high machine for undercutting coal at face lines. Similarly AB 12 being 12 inches high for thin seams

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Definitions and acronyms | WorkSafe

Definitions of some key terms, concepts and acronyms used on this and other associated websites

List of International Organization for Standardization standards

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