Definition of adit in English:



  • A horizontal passage leading into a mine for the purposes of access or drainage.

    • ‘The orebodies were accessed through several adits and a few shallow shafts.’
    • ‘Pits that run horizontally into a hill slope or cliff following material into the slope are known as adits or drift mines.’
    • ‘Armed with large circular screens, we worked the pocket remains in a small stream that ran past the mine adit.’
    • ‘Underground mining entails sinking shafts to reach the target resource and driving tunnels and adits, either inclined or horizontally.’
    • ‘The area has several adits and numerous small pits and cuts.’
    • ‘By May 2004, more than 10,000 tons of high-grade ore had been mined from this adit.’
    • ‘The bright ‘one way’ sign in the corner of a photograph of an adit on the Langley asbestos mine in Prieska catches the eye.’
    • ‘Our first target was in the vicinity of the Pinto mine and the Buckhorn mine, where a cluster of adits was indicated.’
    • ‘The mine's three adits lie in the Shinarump conglomerate member of the Triassic Chinle Formation.’
    • ‘Many adits, shafts and tunnels, some extending over 100 m, pursue these veins deep underground.’
    • ‘During winter 1900-1901 Leon Estivant, the French owner of the mine, sunk a shaft and drove an adit on a fissure vein in a hill just south of the main Clark mine.’
    • ‘The strategy for the second year was to drive a new tunnel, branching to the northeast from the main adit near the mine entrance.’
    • ‘On the capital side, the mining of coal additionally often required agreements with surrounding landowners to sink pits and build adits and soughs to drain the water from the mines.’
    • ‘It has both a vertical shaft and an adit to an incline, which we and several mine officials entered in a small bus.’
    • ‘The mule train would have entered the mine through an adit.’
    • ‘Early development included sinking shafts and driving adits on the various copper-bearing lodes; by 1870 the mine had produced about 902,000 pounds of copper.’
    • ‘The Jomac mine's three adits lie within the Glen Canyon National Recreation Area boundary.’
    • ‘Two shafts and an adit were ultimately driven, but Dunham reported that recorded output of lead concentrates for this period was fairly low.’
    • ‘For the next ten years it was leased to tributors who worked the old stopes of the conglomerate lode above the adit level.’
    • ‘Very little remains of the old silver mines at Glen Osmond, apart from some of the old shafts, adits and the chimney, the oldest mine building in Australia.’
    mineshaft, tunnel, passage, pit, downcast, upcast
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Early 17th century: from Latin aditus ‘approach, entrance’, from adit- ‘approached’, from the verb adire, from ad- ‘towards’ + ire ‘go’.