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sulfide mining wiki

  • Potential Deep-Sea Mining of Seafloor Massive Sulfides: A ...

    Placer Dome's interest of deep-sea mining of seafloor massive sulfides is focused on the eastern part of the Bismarck Sea, specifically in the eastern Manus Basin, which is tectonically classified as a back-arc basin (Figure 2-1). These basins are usually formed behind island arcs, which in turn are formed along active plate margins.


  • Resourcing - Official Rokh Wiki

    The Mining Quality of the extraction tool determines whether extraction of a resource from the deposit is possible. The quantity of the resource extracted can be increased by improving the Efficiency of the extraction tool. There are 6 types of resource deposit: silicate, carbonate, oxide, sulfide, ice and meteor.


  • Acid mine drainage - Wikipedia

    Second, the phrase "sulfide mining" is not used in the mining field - simply because sulfide is not the target of the mining operation, the metals combined with the sulfur are the target and consequently the Michigan project would be a copper - nickel mine. Google search on the "sulfide mining" phrase returns about 30,000 hits with seemingly ...


  • Sulfide Mining Regulation in the Great Lakes Region: A

    The following are excerpts from Sulfide Mining Regulation in the Great Lakes Region: A ... operation and reclamation of sulfide mining is regulated by the Department of Natural Resources, under the authority of Minn. Stat. §§ 93.44-93.51 and their implementing regulations, Minn. Rules Ch. 6132 ("Nonferrous Metallic Mineral Mineland


  • 2015 Gold King Mine waste water spill - Wikipedia

    The 2015 Gold King Mine waste water spill was an environmental disaster that began at the Gold King Mine near Silverton, Colorado, when Environmental Protection Agency personnel, along with workers for Environmental Restoration LLC (a Missouri company under EPA contract to mitigate pollutants from the closed mine), caused the release of toxic waste water into the Animas River watershed.


  • 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.


  • Mining threatens Minnesota's pristine Boundary Waters

    Jan 20, 2018· The sulfide-ore mining process used to extract copper and nickel pollutes waters with acid, arsenic, mercury and lead. Minnesota Gov. Mark Dayton also declared lands adjacent to …


  • What is "Sulfide Mining"? - YouTube

    Aug 18, 2016· The mining industry hates the term, but Paula Maccabee explains why "sulfide mine" is a much more appropriate way to describe PolyMet's proposed project than "copper-nickel mine".


  • Save the Boundary Waters

    The Boundary Waters Canoe Area Wilderness is threatened by sulfide-ore copper mining. The Campaign to Save the Boundary Waters is leading the effort to ensure permanent protection for the Boundary Waters Wilderness, America's most visited Wilderness and Minnesota 's crown jewel, from proposed sulfide-ore copper mining. TAKE ACTION NOW


  • Seafloor massive sulfide deposits - Wikipedia

    Seafloor massive sulfide deposits or SMS deposits, are modern equivalents of ancient volcanogenic massive sulfide ore deposits or VMS deposits. The term has been coined by mineral explorers to differentiate the modern deposit from the ancient. SMS deposits were first recognized during the exploration of the deep oceans and the mid ocean ridge spreading centers in the early 1960s.


  • Sulfide versus hydroxide precipitation - BioMineWiki

    Sulfide precipitation would be the method of choice, if the high cost of transporting, storing or producing sulfide on site (as NaSH or H 2 S) would not have hampered its widespread application in the metal and mining …


  • What is roasting of a sulfide ore? - Quora

    Why are they not reduced directly from the sulfide form? ... B.Tech Mining & Coal, Indian Institute of Technology, Dhanbad (1979) Answered Jun 21, 2018. The concentrated ore ( received after crushing and floating) is roasted in a furnace in the presence of a current of air. Sulphur is oxidized to SO2 and impurities of arsenous and antimony are ...


  • Climax mine - Wikipedia

    The Climax mine, located in Climax, Colorado, United States, is a major molybdenum mine in Lake and Summit counties, Colorado.Shipments from the mine began in 1915. At its highest output, the Climax mine was the largest molybdenum mine in the world, and for many years it supplied three-fourths of the world's supply of molybdenum.


  • Molybdenum mining in the United States - Wikipedia

    Molybdenum mining in the United States produced 65,500 metric tons of molybdenum in 2014, worth US$1.8 billion. The US was the world's second-largest molybdenum producer, after China, and provided 25% of the world's supply of molybdenum.. The US was a major exporter of molybdenum; net exports made up 48% of US production.


  • Safety and Health Topics | Hydrogen Sulfide | Occupational ...

    Hydrogen sulfide is one of the leading causes of workplace gas inhalation deaths in the United States. According to the Bureau of Labor Statistics (BLS), hydrogen sulfide caused 60 worker deaths between 2001 and 2010. It is highly flammable and toxic, even at low concentrations. It is heavier than ...


  • Do we need more copper? — Duluth for Clean Water

    Aug 23, 2017· If the Congressman has researched the topic at all, he knows that copper is found in abundance throughout the world. Whether the low-grade sulfide ore found in northeastern Minnesota is mined or not will have no detectable effect on the availability of copper in the global market, which is where any copper mined in Minnesota would be headed.


  • Lois Gibbs - Wikipedia

    Lois Marie Gibbs (born June 25, 1951) is an American environmental activist.A primary organizer of the Love Canal Homeowners Association, Lois Gibbs brought public attention to the environmental crisis in Love Canal.Her actions resulted in the evacuation of over 800 families. She founded the non-profit, Clearinghouse for Hazardous Waste in 1981, to help train and support local activists with ...


  • Copper extraction - Wikipedia

    As in all mining operations, the ore must usually be beneficiated (concentrated). The processing techniques depend on the nature of the ore. If the ore is primarily sulfide copper minerals (such as chalcopyrite), the ore is crushed and ground to liberate the valuable minerals from the waste ('gangue') minerals. It is then concentrated using ...


  • Not all sulfide mines will result in the severity of harm experienced at Torch Lake. Moreover, some of sulfide mining's ecological threats can be mitigated or avoided alto- gether. Nevertheless, the decision to allow sulfide mining inevitably is a decision to permit some ecological harm.


  • Dilithium | Memory Alpha | FANDOM powered by Wikia

    Dilithium was an element, a member of the hypersonic series, mostly occurring as crystalline mineral. It was used to control the power of the warp drive systems of many starships by regulating the matter/antimatter reaction in a ship's warp core because of its ability to be rendered porous to...


  • Public Lab: Hydrogen Sulfide Copper Pipe Testing

    This method, developed by Lionel Milberger, is a low-cost, accessible way to detect if hydrogen sulfide is present in the air. The elemental copper will react with hydrogen sulfide to produce a purple-black-ish copper sulfide product, visible on the surface of the copper rod.


  • Public Lab: Hydrogen Sulfide Detection

    Hydrogen sulfide can be measured a variety of methods due to sulfur's versatile chemistry. Sulfur has five oxidation states (-2, 0, +2, +4, +6) and readily forms gaseous, aqueous, and solid compounds at room temperature and pressure, which can be effectively manipulated in laboratory settings.


  • Sulfur - Wikipedia

    Hydrogen sulfide gas and the hydrosulfide anion are extremely toxic to mammals, ... Mining was unmechanized and labor-intensive, with pickmen freeing the ore from the rock, and mine-boys or carusi carrying baskets of ore to the surface, often through a mile or more of tunnels. Once the ore was at the surface, it was reduced and extracted in ...


  • Pyrite - No Man's Sky Wiki

    From No Man's Sky Wiki. Jump to: navigation, search. The subject of this article is from the Visions update. The information from this article is up-to-date as of 13 August, 2019. ... Pyrite (FeS2, name derived from the Greek word pyrites, meaning "of fire") is an iron-sulfide, commonly mistaken for gold and thus nicknamed 'fool's gold'. In ...


  • Say NO to Sulfide Mining in the Upper Peninsula – MediaMouse

    Sulfide mining is a much more dangerous and harmful form of mining. Unlike ore-based mining, sulfide mining extracts nickel, copper and other deposits from sulfide-rich rock compounds. Kennecott Minerals is pushing for this project under the guise of responsibility, sustainability, and economics, while various environmental groups and local ...


  • Major Tues. event against sulfide mine on WI-MI border

    Jan 10, 2018· Major Tues. event against sulfide mine on WI-MI border . An important communication and action plan from a friend about a toxic sulfide mining proposal headed for the Menominee River at the Michigan-Wisconsin border just arrived.


  • sulfide mining – MediaMouse

    Posts about sulfide mining written by mediamouse. Ingham County Circuit Judge Paula Manderfield dismissed a lawsuit file by opponents of a controversial sulfide mine that Kennecott Eagle Minerals is trying to open in Michigan's Marquette County.. According to the Associated Press, the court ruled that the Michigan Department of Natural Resources (DNR) acted appropriately when it decided to ...


  • Marcopper mining disaster - Wikipedia

    The Marcopper mining disaster is one of the worst mining and environmental disasters in Philippine history. It occurred on March 24, 1996, on the Philippine island of Marinduque, a province of the Philippines located in the Mimaropa region. The disaster led to drastic reforms in the country's mining …


  • Sulfide minerals - Wikipedia

    The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 2 2−) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, …


  • Well-regulated sulfide mining can be done effectively ...

    Maybe, in the best of all possible worlds sulfide mining could be done safely. That is not here. It will be done in a way that will ultimately lead to some significant loss to the environment ...


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