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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]
A bell pit was a type of coal mine in which coal found close to the surface was extracted by sinking a shaft and removing coal from around it until the roof became unstable. It was then abandoned and left to subside. [5] Bind. A term used in various areas to refer to shale, mudstone, clay or sandstone overlying the seam. Bituminous coal
The main tunnel connected to the Savage Mine in 1878, the North and South branches were completed in 1879. Water was released from the mines on June 30 of 1879. Upon completion, Adolph Sutro sold his interest in the tunnel company.
Now the Mine Shaft sign is back above the entrance to the end zone sections 14 and 15, and 10 minutes before UTEP's 7 p.m. kickoff against Southern Utah on Sept. 7, the team will make the walk ...
Adits were used as entrances to the mine, and sources of drainage and ventilation. [8] Stoping was a technique the Romans used to dig out of all the ore and leave behind an open space. Once the ore had been dug out trip hammers powered by water were used to crush it, [ 9 ] and mercury was used to separate gold from surrounding materials. [ 10 ]
The Moat Pit at Culross, also called the Coal Mine in the Sea, is a site of 16th-century undersea mining in Culross, Scotland. It is the world’s first known example of undersea mining. It was built around 1590, [1] and operated for 35 years before being overwhelmed and flooded during the Great Storm on 30 March 1625. [2]
The deepest active hard rock mine in North America is Kidd Mine in Canada, which mines zinc and copper in Timmins, Ontario. At the maximum depth of 9,889 feet (3,014 m) this mine is the deepest base metal mine in the world, and its low surface elevation means that the bottom of the mine is the deepest accessible non-marine point on earth. [14] [15]
The southern section of Old Mine Road provides a key access from Interstate 80 and several of the park's recreation and cultural sites. It also serves as an important route for emergency services ...