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open pit sulfide mining process

Open pit mining -- or strip mining -- is an extraction process for ore or fossil fuels that takes place at the surface of a mining site. Worldwide, 40 percent of mining occurs at the surface, according to Greenpeace International. Compared with underground mining, surface mining is much more efficient.

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  • Reading: OpenPit Mining | Geology  Lumen Learning

    Reading: OpenPit Mining | Geology Lumen Learning

    Reading: Open-Pit Mining. Open-pit mining, ... Tailings dams can often be toxic due to the presence of unextracted sulfide minerals, some forms of toxic minerals in the gangue, and often cyanide which is used to treat gold ore via the cyanide leach process. This toxicity can harm the surrounding environment.

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  • WHAT YOU SHOULD KNOW ABOUT AQUILA RESOURCES

    WHAT YOU SHOULD KNOW ABOUT AQUILA RESOURCES

    Open Pit Sulfide Mine in Ladysmith, Wisconsin, as a successfully reclaimed mine. "Flambeau was a very successful mining operation, and the two sites are very similar, so weve been able to use the engineering work done on Flambeau as a template for the Back Forty mine." Steve Donohue, Vice President of Mining at Foth Infrastructure & Environment,

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  • Environmental nightmares created by open pit mines  Nexus

    Environmental nightmares created by open pit mines Nexus

    Seven (Of Hundreds) Environmental Nightmares Created By Open Pit Mines (and the Obligatory Tailings Ponds ) that have ... The sulfide and precious metals mining process produces a toxic slurry of finely ground mine tailings, that inevitably contain undesirable toxic substances like arsenic, mercury, and other toxic sulfide minerals, which are ...

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  • Lessons From the Most Toxic Open Pit Copper Mine in the World

    Lessons From the Most Toxic Open Pit Copper Mine in the World

    Nov 28, 2016 · Except for canaries, underground mines have never been a threat to birds, and underground mines were the norm until the 1950s when open pit mining began in Montana. The Berkeley Pit was the first open pit mine in the area and today it is the most toxic open pit copper mine in the world. And it is lethal to water birds.

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  • Open Pit Sulfide Mining on the Menominee River?  Sierra Club

    Open Pit Sulfide Mining on the Menominee River? Sierra Club

    Aquila Resources wants to develop an open pit (2000 ft. wide, 2500 ft. long and 800 ft. deep) massive gold-zinc sulfide mine 150 feet from the the Menominee River, encroaching upon the floodplain. Underground mining plans have not been disclosed to the DEQ, but would double the

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  • Water Quality In Open Pit Precious Metal Mines

    Water Quality In Open Pit Precious Metal Mines

    PB95-191243 EPA No. 530-R-95-011 Final Report Water Quality in Open Pit Precious Metal Mines Margaret Saunders Macdonald Glenn C. Miller W. Berry Lyons Department of Environmental and Resource Sciences University of Nevada, Reno Reno, NV 89557 December 1994 Supported by a Grant from the U.S. Environmental Protection Agency (Grant #R820245) v-!

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  • What is Sulfide Mining? | Mining Action Group

    What is Sulfide Mining? | Mining Action Group

    Mining Action Group The Mining Action Group is a volunteer, grassroots effort to defend the clean water and wild places of Michigan’s Upper Peninsula from the dangers of sulfide mining – previously known as Save the Wild U.P.

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  • The great sulfide mining divide: You cant save the BWCA

    The great sulfide mining divide: You cant save the BWCA

    The great sulfide mining divide: You can’t save the BWCA unless you save the Lake Superior watershed ... a willingness to process their ore and deposit much of their sulfide mine waste in the ...

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  • Copper extraction  Wikipedia

    Copper extraction Wikipedia

    Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

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  • OpenPit Mining Definition  Anglo American

    OpenPit Mining Definition Anglo American

    Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore deposits are ...

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  • Innovations: Introduction to Copper: Mining  Extraction

    Innovations: Introduction to Copper: Mining Extraction

    Underground mining is, however, relatively expensive and is generally limited to rich ores. El Teniente, in Chile, is the worlds largest underground copper mine. Open pit mining is employed when the orebodies are extensive, low in grade, and relatively near the surface, where they can be …

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  • Metallic Sulfide Mining | Sierra Club

    Metallic Sulfide Mining | Sierra Club

    Many metallic sulfide mines are open pit mines, meaning companies kill forests and vegetation by bulldozing expansive swaths of land, before digging large craters to excavate the minerals. In fact, more than 80 percent of copper operations in the United States use open pit mining. Because it involves clearing vast natural areas, it reduces ...

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  • Reclaimed Flambeau mine  Wisconsin DNR

    Reclaimed Flambeau mine Wisconsin DNR

    May 17, 2011 · The open-pit, copper-gold mine began operations in July 1991, and reclamation activities were completed by the end of 1999. As specified in the Reclamation Plan and Mining Permit, the open-pit was backfilled. The backfilling process involved blending the stockpiled waste rock with a prescribed amount of limestone.

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  • OpenPit Mining Definition  Anglo American

    OpenPit Mining Definition Anglo American

    Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore deposits are ...

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  • AMIT 129: Lesson 2 Open Pit and PPE  Mining Mill Operator

    AMIT 129: Lesson 2 Open Pit and PPE Mining Mill Operator

    Open-Pit Mining. Open pit mining is the process of mining any near-surface deposits by means of a surface pit excavated using one or more horizontal benches. Open pit mines are often used in mining metallic or nonmetallic deposits and more sparingly in coal and other bedded deposits.

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  • How can metal mining impact the environment? | American

    How can metal mining impact the environment? | American

    Open pit mining disturbs larger areas than underground mining, and thus has larger visual and physical impacts. As the amount of waste rock in open pit mines is commonly two to three times the amount of ore produced, tremendous volumes of waste rock are removed from the pits and deposited in …

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  • Sulfide Mining Fact Sheet  MEPartnership

    Sulfide Mining Fact Sheet MEPartnership

    Sulfide Mining Fact Sheet What is sulfide mining? òSulfide mining ó refers to mining metals that are found in sulfide-bearing rock. Mining metals in sulfide ores can be done in two ways: in underground mines where the ore deposits are very deep, and in open-pit …

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  • Reclaimed Flambeau mine  Wisconsin DNR

    Reclaimed Flambeau mine Wisconsin DNR

    May 17, 2011 · The open-pit, copper-gold mine began operations in July 1991, and reclamation activities were completed by the end of 1999. As specified in the Reclamation Plan and Mining Permit, the open-pit was backfilled. The backfilling process involved blending the stockpiled waste rock with a prescribed amount of limestone.

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  • Upper Peninsula mine approved despite major concerns from

    Upper Peninsula mine approved despite major concerns from

    The open-pit sulfide mine would operate on 83 acres and its pit would be 2,000 feet by 2,500 feet, and 750 feet deep, according to the company. ... closure plan would not be developed until after ...

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  • Environmentalists Criticize Open Pit Sulfide Mine Planned

    Environmentalists Criticize Open Pit Sulfide Mine Planned

    Dec 21, 2015 · Several grassroots environmental organizations, including Save the Wild U.P. and the Front 40, with local property owners, have been deeply critical of the Back Forty proposal for years, contending that an open pit sulfide mine, with on-site processing and tailings, will pollute the adjacent Menominee River.

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  • Copper Mining and Processing: Processing of Copper Ores

    Copper Mining and Processing: Processing of Copper Ores

    Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

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  • Water Quality In Open Pit Precious Metal Mines

    Water Quality In Open Pit Precious Metal Mines

    PB95-191243 EPA No. 530-R-95-011 Final Report Water Quality in Open Pit Precious Metal Mines Margaret Saunders Macdonald Glenn C. Miller W. Berry Lyons Department of Environmental and Resource Sciences University of Nevada, Reno Reno, NV 89557 December 1994 Supported by a Grant from the U.S. Environmental Protection Agency (Grant #R820245) v-!

    More Details
  • The great sulfide mining divide: You cant save the BWCA

    The great sulfide mining divide: You cant save the BWCA

    The great sulfide mining divide: You can’t save the BWCA unless you save the Lake Superior watershed ... a willingness to process their ore and deposit much of their sulfide mine waste in the ...

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  • Metallic Sulfide Mining | Sierra Club

    Metallic Sulfide Mining | Sierra Club

    Many metallic sulfide mines are open pit mines, meaning companies kill forests and vegetation by bulldozing expansive swaths of land, before digging large craters to excavate the minerals. In fact, more than 80 percent of copper operations in the United States use open pit mining. Because it involves clearing vast natural areas, it reduces ...

    More Details
  • SULFIDE MINING  Minnesota Center for Environmental

    SULFIDE MINING Minnesota Center for Environmental

    Sulfide mining, unfortunately, poses several significant environmental risks. The most significant one is the threat to water quality. When sulfide ores are exposed to air and water, the result is sulfuric acid, which causes the leaching of potentially toxic heavy metals and the release of sulfates that contribute to the methylation of mercury.

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  • MU Environmental Geology Ch. 12 Flashcards | Quizlet

    MU Environmental Geology Ch. 12 Flashcards | Quizlet

    MU Environmental Geology Ch. 12 study guide by mca152030 includes 59 questions covering vocabulary, terms and more. ... open pit mining is done because. the mineral deposits are either exposed or neat to the land surface. ... can degrade nearby surface water quality and happens where ore deposit is rich in sulfide minerals. pyrite (iron sulfide

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  • When it comes to sulfide mining lets use prowater and

    When it comes to sulfide mining lets use prowater and

    Understand that Antofagasta’s proposed underground sulfide mine would morph into an open pit. At the old INCO test pit area – a portage away from the BWCA – the first 1,000 feet of ...

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  • OpenPit Mining Definition  Anglo American

    OpenPit Mining Definition Anglo American

    Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore deposits are ...

    More Details
  • How can metal mining impact the environment? | American

    How can metal mining impact the environment? | American

    Open pit mining disturbs larger areas than underground mining, and thus has larger visual and physical impacts. As the amount of waste rock in open pit mines is commonly two to three times the amount of ore produced, tremendous volumes of waste rock are removed from the pits and deposited in …

    More Details

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