The ruling is a victory for supporters of the states first copper nickel mine and the agency which mine opponents accused of procedural irregularities in how it developed and eventually approved the water permit needed to build the 1 billion mine on the Iron Range in northeastern Minnesota.
Copper Mining Air Quality Information Below is a list of recent documents related to air quality permit status and dust emissions from mine tailings in Pima County This information is posted at the request of the public and is updated as information becomes available.
The copper mining giant failed to live up to a federally mandated dust control plan agency says Asarco upgraded the Hayden smelter to meet U S air pollution rules as part of a 2015.
The judge however did not completely exonerate the agency saying it improperly deleted emails from former Commissioner John Linc Stine and Assistant Commissioner Shannon Lotthammer that showed the two negotiating with the Environmental Protection Agency to delay the federal agency from submitting comments critical of the project until after a public comment period was over the Star Tribune reported.
The 1980 Copper Strike Journal of Air Pollution Control vol 33 though fossil fueled electric powerplants are the major source of S0 2 emissions in the United States smelters contribute significantly to total emissions in the sparsely popuIated copper pro ducing areas of the West see table 8 l Fugitive emissions from furnaces and.
Paula Maccabee a lawyer for Water Legacy one of the environmental groups that sued to stop the project said her group would appeal.
Oct 10 2003nbsp018332The Environmental Protection Agency EPA is failing to protect communities and the environment from toxic air pollution emitted by copper smelters environmental groups argued today The U S Court of Appeals for the District of Columbia heard oral arguments in a case Docket 02 1253 challenging EPAs inadequate regulations for controlling toxic air emissions from primary copper.
Guthmanns report now goes to the Minnesota Court of Appeals which will resume its consideration of several lawsuits filed by environmental groups and the Fond du Lac band arguing the permit violates state law and the federal Clean Water Act.
Aug 24 2017nbsp018332The mining and processing of nickel rich ores can generate high loadings of dust in the air that contains high concentrations of potentially toxic metals including nickel itself copper cobalt.
Metallic sulfide mining aka hard rock mining is the practice of extracting metals such as nickel gold and copper from a sulfide rich ore body Sulfides are a geologic byproduct of mining in this area and by exposing sulfides to the air and water in our atmosphere sulfuric acid can be created threatening to poison the nearby water.
Jul 24 2020nbsp018332Dillingham Alaska a fishing community of 2 300 is the largest town and hub of the Bristol Bay region which is at the center of a battle over a proposed gold and copper mine.
Jul 27 2020nbsp018332The mining executive points out that current techniques of processing sulphide and laterite ores generate significant sulphur dioxide SO2 and C02 emissions and that the.
Sep 04 2020nbsp018332The water pollution permit approved by the state agency in December 2018 was one of the last of the permits required for the company to move toward construction of the mine.
Copper and compounds has a widespread use in a range of applications It is used to make electrical products and electronics electrical generators and motors electrical power and lighting fixtures electrical wiring radio and television sets computers air conditioning systems and other electrical appliances in building construction water pipes roof coverings equipment and heating refrigeration units motor vehicle radiators home heating systems steam condensers and chemical and pharmaceutical manufacturing.
It is used in pigments and dyes electroplated protective coatings and undercoatings cooking utensils insulation for liquid fuels coins cement food and drugs metallurgy nylons insecticides herbicides and fungicides pollution control devices printing and photocopying photographics pyrotechnics and wood preservatives and timber treatments.
An example is the modernized smelter built by Kennecott Utah Copper that processes ore concentrates from the Bingham Canyon Mine near Salt Lake City Using technology developed by the Finnish company Outokumpu this smelter has reduced sulfur dioxide emissions.
Copper forms many alloys such as bronze with tin brass with zinc and monel metal with nickel also used in a variety of industries.
Copper II acetate is used as a fungicide catalyst for organic reactions pigment for ceramics insecticides mildew preventive preservative for cellulose materials stabiliser for polyurethanes and nylons corrosion inhibitor and fuel additive It is used in textile dyeing anti fouling paints electrolysis and electroplating processes flame proofing printing and photocopying and pyrotechnics It is also used as a shark chaser or repellent developed as part of survival equipment for military personnel who fly over shark infested waters.
Copper I cyanide is used in silver brass and copper tin alloy plating and as an insecticide fungicide and anti fouling agent.
It is used as a battery electrolyte flotation agent pigment in paints varnishes and other materials mordant bath for intensifying photographic negatives reagent toner in photography and photoengraving fungicide for control of downy mildew blights leaf spots apple scab bitter rot and peach leaf curl and pollution control catalyst.
In agriculture copper II sulfate is used in Bordeaux and Burgundy mixtures on the farm for the control of fungus diseases correction of copper deficiency in soils correction of copper deficiency in animals stimulation of growth for fattening pigs and broiler chickens a molluscicide for the destruction of slugs and snails particularly the snail host of the liver fluke.
Copper II oxide is used in the ceramic industry for imparting blue green or red tints in glasses glazes and enamels It is occasionally employed for incorporation in mineral supplements for insuring against an insufficiency of copper in the diet of animals Among its other uses is the preparation of solutions for the rayon industry.
The petroleum industry uses copper I chloride in their oil sweetening process Ammoniacal solutions of cuprous chloride are employed for the absorption of any carbon monoxide which may be present in a gas as an impurity Copper II nitrate has a number of small uses such as in ceramics in dyeing as a mordant in fireworks and in photography.
Sep 07 2017nbsp018332Air pollution is an important issue in developed and industrialized countries The most common sources of air pollution are anthropogenic activities such as construction dust vehicular emissions and mining For low and middle income countries biomass burning and indoor heating are the leading sources of air pollution.
The reason is very simple The increased mining activity that was green lighted by the Division of Air Quality would increase RTKs overall emissions of nitrogen oxides by 54 percent and its particulate emissions by 66 percent Thats according to the companys own documents.
Apr 30 2014nbsp018332On a sample day in December 2011 for instance the concentrations of lead in air of 0 784 micrograms per cubic metre of air were published as being good while arsenic in air.
All major mining activities directly or indirectly contribute to the problem of air pollution and related health hazards The growing emphasis on open pit mining operations in recent years to achieve ever increasing production targets has further aggravated the problem of air pollution.
For copper smelters the following air emissions levels should be achieved Effluent treatment by precipitation filtration etc of process bleed streams filter backwash waters boiler blowdown and other streams may be required to reduce suspended and dissolved solids and heavy metals Residues.
Copper mining surface and underground mining Due to copper being spread in relatively low concentrations over large areas surface or open pit mining is the predominant mining method for copper in the world After mining copper is produced by one of two process routes pyrometallurgical or hydrometallurgical.
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