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  2. Gold dredge - Wikipedia

    en.wikipedia.org/wiki/Gold_dredge

    Gold Dredge, Klondike River, Canada, 1915 The Yankee Fork dredge near Bonanza City, Idaho, which operated into the 1950s. A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. The original gold dredges were large, multi-story machines built in the first half of the 1900s.

  3. AU Grabber - Wikipedia

    en.wikipedia.org/wiki/AU_Grabber

    The AU Grabber (pronounced as: Gold Grabber; [NB 1]) is a self-propelled barge excavator dredge used to mine Bering Sea placer gold deposits in the region around Nome, Alaska, USA. It is owned and operated by Richard Schimschat and featured in the Discovery Channel USA mining reality TV show Bering Sea Gold .

  4. Gold mining - Wikipedia

    en.wikipedia.org/wiki/Gold_mining

    Gold deposits were discovered in rivers and streams, leading to a surge in prospecting and mining activity. [21] [22] The Scottish Crown took an interest in gold discoveries, in hopes of aiding the kingdom's economy and revenue. King James IV of Scotland established a royal mint to produce gold coins from Scottish gold. The Scottish gold rush ...

  5. Hydraulic mining - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_mining

    Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870.. The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3]

  6. Mining methods of the Klondike Gold Rush - Wikipedia

    en.wikipedia.org/wiki/Mining_methods_of_the...

    A dredge could do the work of 2,400 [9] persons while operated by 10-12. [10] It would create a pool of water that moved along with it as it dug up gravel in front and deposited it behind itself. Inside sand and gold particles were separated from rocks and then gold from sand.

  7. Fairbanks Gold Rush - Wikipedia

    en.wikipedia.org/wiki/Fairbanks_Gold_Rush

    The prospectors soon found jobs working for Barnette—prospecting for him by panning and sluicing for gold in Fairbanks. [3] The Fairbanks Exploration Company bought up claims within a 30 by 50 mile area and brought in gold dredges on the Alaska Railroad. The population of Fairbanks increased from 1,155 in 1920 to 2,101 in 1930.

  8. Underground hard-rock mining - Wikipedia

    en.wikipedia.org/wiki/Underground_hard-rock_mining

    The deepest mines in the world are the Mponeng and TauTona (Western Deep Levels) gold mines in the Witwatersrand region of South Africa, which are currently working at depths exceeding 3,900 m (12,800 ft). [13] The deepest inactive mine in Asia is the Kolar in the Karnataka region of India. Closed in 2001, the main shaft had reached a depth of ...

  9. Mining in Guyana - Wikipedia

    en.wikipedia.org/wiki/Mining_in_Guyana

    In 2012, US$11.5 million of gold was seized in Curacao. [5] Despite government enacting a ban on the use of mercury, it is still used for gold extraction by small-scale operations. [10] A 1995 cyanide spill associated with large-scale gold mining at Omai Mines caused significant damage to the eco-system of the Highland region. [2]

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