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2. Mponeng Gold Mine - Wikipedia

   en.wikipedia.org/wiki/Mponeng_Gold_Mine

   As part of the Witwatersrand, the largest gold mineralization on earth, Mponeng is the result of the discovery of the basin by Europeans. Beginning in the 1850-70s a series of mineral discoveries were made in the area, including those of Pieter Jacobus Marais panning gold from a river and Henry Lewis finding quartz and gold vein on a farm, that led to the Witwatersrand Gold Rush in 1886. [9]

3. List of deepest mines - Wikipedia

   en.wikipedia.org/wiki/List_of_deepest_mines

   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.

4. File:Mponeng-goudmyn, Merafong City-pm, Wesrand-dm, a.jpg

   en.wikipedia.org/wiki/File:Mponeng-goudmyn...

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5. 11 Historical Photos That Prove Gold Prospecting Isn’t for ...

   www.aol.com/11-historical-photos-prove-gold...

   Republic Gold Mining Company in De Kaap, South Africa (1888) Bettmann / Contributor / Getty Images. 5. A couple prospecting in Coloma, California (1934) Bettmann / Contributor / Getty Images. 6 ...

6. TauTona Mine - Wikipedia

   en.wikipedia.org/wiki/TauTona_Mine

   The TauTona Mine, formerly Western Deep Levels No.3 Shaft, [1] is a gold mine located in the West Wits gold field west of Johannesburg. The mine is near the town of Carletonville in South Africa. At approximately 3.9 kilometers (2.4 mi) deep, it is home to the world's second deepest mining operation, rivalled only by the Mponeng Gold Mine ...

7. Underground hard-rock mining - Wikipedia

   en.wikipedia.org/wiki/Underground_hard-rock_mining

   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]