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In 2005, Creighton mine produced an average of 3,755 tons of ore per day on a 6 days per week schedule. 2007 was a breakthrough in mining extraction and exploration, with the conformation of mineralization at depth, [18] which produced 793,000 tonnes of ore with grades of 1.62% copper and 2.8% nickel.
This list of deepest mines includes operational and non-operational mines that are at least 2,212 m (7,257 ft), which is the depth of Veryovkina 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.
Coal mining disasters in Ohio (1 P) M. Mining communities in Ohio (1 C) Mining museums in Ohio (2 P) Pages in category "Mining in Ohio"
In 2009, Gatling, Ohio LLC invested $75 million to open a new coal mine and coal prep plant near Racine. It is capable of employing 120 to 150 miners, and is capable of producing 3.5 million marketable tons of coal per year.
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The mine dives through limestone to a depth of 1,793 feet (547 m), [5] a four-minute trip by elevator, [10] before expanding horizontally under the lake, which is only 56 feet (17 m) deep here. [ 11 ] [ 9 ] The mine has grown significantly over the years, from 4 square miles (10 km 2 ) in 2013 [ 9 ] to 12 sq mi (31 km 2 ) in 2016 [ 11 ] to 16 ...
Unlike other mines in Ohio, Century Mine used longwall technology that enabled it to operate with relatively fewer workers. [4] The mine had applied for a permit to extend operations by five years in 2017 and expected reserves to last for another 35 years. [6] Century Mine was the site of a fatal accident in 2011 [7] and another in 2013. [8]
The Creighton fault as it passes under Science North. Creighton fault is a major fault line through the Sudbury Basin in Canada. It has a mapped length of 56 km, a throw of over 600m, and a shear zone 30m wide, and runs east–west through Lake Ramsey and the Creighton mine.