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ADIT

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A horizontal tunnel opening from the surface used for haulage, access to a mine, exploration or drainage.

Related Terms

Term Note
MINE An excavation made in the earth for the purpose of digging out metallic ores, coal, salt, precious stones and other minerals. Use specific term where known.
SHAFT A vertical passage which provides access or ventilation to an underground excavation or chamber. Use only if function is unknown, otherwise use specific term.
TUNNEL An artificial underground channel. Use specific type where known.

Heritagedata.org: Linked Data resource