| Armed with large circular screens, we worked the pocket remains in a small stream that ran past the mine adit. |
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| By May 2004, more than 10,000 tons of high-grade ore had been mined from this adit. |
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| For the next ten years it was leased to tributors who worked the old stopes of the conglomerate lode above the adit level. |
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| The strategy for the second year was to drive a new tunnel, branching to the northeast from the main adit near the mine entrance. |
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| Two shafts and an adit were ultimately driven, but Dunham reported that recorded output of lead concentrates for this period was fairly low. |
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| It has both a vertical shaft and an adit to an incline, which we and several mine officials entered in a small bus. |
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| The authorization to excavate an exploratory adit in the accident area was granted in June 2005, allowing the work to begin immediately. |
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| On Friday, February 15, 2008, the miners of the Ceneri Base Tunnel started the tunnel boring machine for the window adit. |
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| On the construction site at Amsteg, first blasts are performed for driving the 1.8-kilometres-long access adit. |
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| 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. |
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| The access adit will then become the logistical artery for the work of driving the tunnel. |
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| Excavation of the window adit and installation caverns will take approximately two years. |
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| From Sigirino, the 2.3-kilometers-long window adit will be cut with a tunnel boring machine. |
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| At Faido, following completion of the access adit down to the starting point, construction work on the multifunction station begins. |
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| At Sigirino, first blasts for the access adit mark the start of excavation work for the Ceneri Base Tunnel. |
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| Today the adit can still be seen at the confluence of the Uncompahgre River and Canyon Creek, at the base of Oak Street on the southwest side of Ouray. |
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| Such was the renown of this prosperous mine that an adit and subsequent shaft were dug more than a mile to the south. |
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| The size and cross section of an adit depend upon its use, with a horseshoe shape especially common. |
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| This activity may range from tree cutting, fencing, and stripping of topsoil to detailed drilling programs, shaft and adit sinking, open pit excavations, etc. |
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| There will be no opportunity to drive an adit to a mine situated on a large flat plain, for instance. |
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| Also if the ground is weak, the cost of shoring up a long adit may outweigh its possible advantages. |
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| Access to a mine by adit has many advantages over the vertical access shafts used in shaft mining. |
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| Of course, adits are still useful for deeper mines because the water only needs to be raised to the drainage adit rather than to the surface. |
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| The mine was situated in Grainsgill Beck on the south western flanks of the fell with the main adit at a height of 340 metres. |
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| When it became necessary to go deeper than the lowest adit, it was essential to pump out the water. |
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| At the end of the adit, the installations caverns will then be excavated. |
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| Behind an iron grille set in a horseshoe arch, it's an adit, begun in 1854 to drain the valley's mines and to search for ore, but the lead industry collapsed before it reached its intended destination of Allenheads. |
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| The Echo Bay large adit was one of the horizontal openings on site. |
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| A 1.8 km adit and a construction tunnel were driven by drilling and blasting to the position of the railway tunnels where assembly caverns were excavated. |
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| An adit with two levels and a separate shaft with three levels of accessible workings combine for a vertical interval of 125 meters of depth. |
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| In other cases, if the geology was favourable, the coal was mined by means of an adit or drift mine driven into the side of a hill. |
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| The Old Mine is currently entered through an upper adit as the main is no longer accessible. |
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| In cases where the mineral vein outcrops at the surface, the adit may follow the lode or vein until it is worked out, in which case the adit is rarely straight. |
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| The first important mines appeared in the 1750s, in the valleys of the rivers Ruhr, Inde and Wurm where coal seams outcropped and horizontal adit mining was possible. |
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| The adit sloped downwards into the bowels of some long-fallen building, following a passage that had silted up when the city had first been buried. |
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| He would not climb down the winze from Cross Roads Adit but climbed up the same winze when coming from Taylor's Shaft. |
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