Adit

An adit (from Latin aditus, entrance)^[1] or stulm^[2] is a horizontal or nearly horizontal passage to an underground mine.^[3] Miners can use adits for access, drainage,^[4] ventilation, and extracting minerals at the lowest convenient level.^[1] Adits are also used to explore for mineral veins.^[1] Although most strongly associated with mining, the term adit is sometimes also used in the context of underground excavation for non-mining purposes; for example, to refer to smaller underground passageways excavated for underground metro systems, to provide pedestrian access to stations (pedestrian adits), and for access required during construction (construction adits).^[5]

^ ^a ^b ^c Ripley, George; Dana, Charles A., eds. (1879). "Adit" . The American Cyclopædia.
^ Thrush, Paul W., ed. (1968). "stulm". A Dictionary of Mining, Mineral, and Related Terms. United States Bureau of Mines Special Publications. U.S. Department of the Interior: Bureau of Mines. p. 1094. Retrieved 22 June 2023. stulm. An approximately horizontal passageway into a mine; an adit.
^ Thrush, Paul W., ed. (1968). "adit". A Dictionary of Mining, Mineral, and Related Terms. United States Bureau of Mines Special Publications. U.S. Department of the Interior: Bureau of Mines. p. 12. Retrieved 22 June 2023. adit. [...] A horizontal or nearly horizontal passage driven from the surface for the working or unwatering of a mine.
^ R. W. Raymond, 1881, Glossary of Mining and Metallurgical Terms, American Institute of Mining Engineers, p.3.
^ "Environmental Risk and Impact Assessment: Proposed Changes to the Approved Project Land" (PDF). Victoria's Big Build. 24 April 2018. p. 7. Retrieved 2024-02-15.

[ac-1] Ripley, George; Dana, Charles A., eds. (1879). "Adit" . The American Cyclopædia.

[2] Thrush, Paul W., ed. (1968). "stulm". A Dictionary of Mining, Mineral, and Related Terms. United States Bureau of Mines Special Publications. U.S. Department of the Interior: Bureau of Mines. p. 1094. Retrieved 22 June 2023. stulm. An approximately horizontal passageway into a mine; an adit.

[3] Thrush, Paul W., ed. (1968). "adit". A Dictionary of Mining, Mineral, and Related Terms. United States Bureau of Mines Special Publications. U.S. Department of the Interior: Bureau of Mines. p. 12. Retrieved 22 June 2023. adit. [...] A horizontal or nearly horizontal passage driven from the surface for the working or unwatering of a mine.

[4] R. W. Raymond, 1881, Glossary of Mining and Metallurgical Terms, American Institute of Mining Engineers, p.3.

[5] "Environmental Risk and Impact Assessment: Proposed Changes to the Approved Project Land" (PDF). Victoria's Big Build. 24 April 2018. p. 7. Retrieved 2024-02-15.

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