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This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
Ellington Colliery (also known as The Big E), [1] was a coal mine situated to the south of the village of Ellington in Northumberland, England.The colliery was the last deep coal mine in the north east of England (also known as the Great Northern Coalfield).
The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
The main aspect of Llechwedd is its Llechwedd Deep Mine Tour which has the steepest narrow gauge railway in the UK and travels over 500 feet underground to the disused slate caverns, and the Quarry Explorer Tour which heads out to the furthest reaches of the Llechwedd site to explore the history of mining in the area.
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Longannet was the last deep mine of any significance in Scotland and its closure effectively ended underground coal mining in Scotland. [2] As of 2008, opencast coal mining continued in Scotland, with 51.4% of Great Britain's opencast coal mines (18 out of 35 mines) and 60.1% of the saleable production by weight (5.68m tonnes out of 9.45m tonnes).
The Jeddo Tunnel (also called the Jeddo Mine Tunnel [2]) is a drainage tunnel at water level in Pennsylvania. It is one of the Coal Region 's biggest discharges of mine water. [ 3 ] [ 4 ] The tunnel is five miles (eight kilometers) long and was constructed between 1891 and 1894, and at the time of its construction, was reputed to be the largest ...
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