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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.
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]
This can happen in open pit mines as well as in underground mines. Large problems are also developing with abandoned mines that have accumulated acid mine drainage that are growing to become a larger problem as the water sits in the mine and reacts with the exposed rock. [12] There can be mitigation through proper management and with enough ...
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 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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The Hillcrest mine disaster, the worst coal mining disaster in Canadian history, occurred at Hillcrest, Alberta, in the Crowsnest Pass region, on June 19, 1914, 9:30 am. [ 2 ] The disaster was reported by several news outlets including the Calgary Herald as the world's third-worst mine disaster at the time, after the Fraterville Mine disaster ...
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