A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end.
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Inquire NowTunnel Boring Machine used for boring a tunnel during the development of the New York City subway system, early 1930s. Photo: David McNew/Getty Images A U.S. coal miner operates a German mining machine in a West Virginia mine.
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Inquire NowBased on InfoMine's Dictionary of Mining and Mineral Terms, tunneling is the operation of excavating, driving, and lining tunnels. A tunnel is a horizontal or inclined stone drivage for development or to connect mine workings, seams, or shafts.
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Inquire NowA tunnel is an underground or underwater passage that is primarily horizontal. Relatively small-diameter ones carry utility lines or function as pipelines.
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