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73-619: Located in southeast Saint Louis County , the Cloquet Valley State Forest is located about 20 miles (32 km) north of Duluth and 25 miles (40 km) southeast of Virginia , in Minnesota's Arrowhead region. It spreads out over east–central Saint Louis County , generally in areas just north of the city of Duluth, but extending into the valleys of the Ush-kab-wan River , Whiteface River , and Cloquet River , for which it

146-767: A humid continental climate ( Köppen Dfb ), slightly moderated by its proximity to Lake Superior. Winters are long, snowy, and very cold, normally seeing maximum temperatures remaining below 32 °F (0 °C) on 106 days. Due to global warming, in January 2019 Tracy Twine, professor at the University of Minnesota's Department of Soil, Water and Climate, said "we just don't expect temperatures to be below 10 degrees Fahrenheit in Duluth anymore." Public schools and other government offices shut down on January 29–30, 2019 because of wind chills of −70 °F or −56.7 °C. This apparent anomaly

219-401: A single-member district of equal population. The county commission elects a chair who presides at meetings. Commissioners as of January 2023: In 2007, St. Louis County considered doing a study about dividing into two counties, but the proposal was not acted on. This county is one of the most reliably Democratic counties in the state, as no Republican or Independent candidate has won

292-516: A 33% to 40% recovery of magnetite by weight, to produce a concentrate grading in excess of 64% iron by weight. The typical magnetite iron ore concentrate has less than 0.1% phosphorus , 3–7% silica , and less than 3% aluminium . As of 2019, magnetite iron ore is mined in Minnesota and Michigan in the United States , eastern Canada , and northern Sweden . Magnetite-bearing banded iron formation

365-684: A benchmark to be followed by the rest of the industry. Singapore Mercantile Exchange (SMX) has launched the world's first global iron ore futures contract, based on the Metal Bulletin Iron Ore Index (MBIOI) which uses daily price data from a broad spectrum of industry participants and independent Chinese steel consultancy and data provider Shanghai Steelhome's widespread contact base of steel producers and iron ore traders across China. The futures contract has seen monthly volumes over 1,500,000 t (1,500,000 long tons; 1,700,000 short tons) after eight months of trading. This move follows

438-569: A coastline and borders both another country and another state . Voyageurs National Park , established in 1975, is located in its northwestern corner, on the south shore of Rainy Lake on the Canada–US border; it is popular with water enthusiasts and fishers. The county includes parts of Superior National Forest , established in 1909, and the Boundary Waters Canoe Area Wilderness on the border, established in 1978. The BWCAW

511-424: A premium price. Due to the high density of hematite relative to associated silicate gangue, hematite beneficiation usually involves a combination of beneficiation techniques. One method relies on passing the finely-crushed ore over a slurry containing magnetite or other agent such as ferrosilicon which increases its density. When the density of the slurry is properly calibrated, the hematite will sink and

584-453: A relatively low-grade ore, they are also inexpensive to collect, as they do not have to be mined. Because of this, companies such as Magnetation have started reclamation projects where they use iron ore tailings as a source of metallic iron. The two main methods of recycling iron from iron ore tailings are magnetizing roasting and direct reduction. Magnetizing roasting uses temperatures between 700 and 900 °C (1,292 and 1,652 °F) for

657-600: A source of iron ore. Prior to the industrial revolution, most iron was obtained from widely-available goethite or bog ore , for example, during the American Revolution and the Napoleonic Wars . Historically, much of the iron ore utilized by industrialized societies has been mined from predominantly hematite deposits with grades of around 70% Fe. These deposits are commonly referred to as "direct shipping ores" or "natural ores". Increasing iron ore demand, coupled with

730-597: A switch to index-based quarterly pricing by the world's three largest iron ore miners— Vale , Rio Tinto , and BHP —in early 2010, breaking a 40-year tradition of benchmark annual pricing. Iron is the most abundant element on earth but not in the crust. The extent of the accessible iron ore reserves is not known, though Lester Brown of the Worldwatch Institute suggested in 2006 that iron ore could run out within 64 years (that is, by 2070), based on 2% growth in demand per year. Geoscience Australia calculates that

803-418: A time of under 1 hour to produce an iron concentrate (Fe 3 O 4 ) to be used for iron smelting. For magnetizing roasting, it is important to have a reducing atmosphere to prevent oxidization and the formation of Fe 2 O 3 because it is harder to separate as it is less magnetic. Direct reduction uses hotter temperatures of over 1,000 °C (1,830 °F) and longer times of 2–5 hours. Direct reduction

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876-655: A typically titanium -bearing magnetite, often with vanadium . These ores form a niche market, with specialty smelters used to recover the iron, titanium, and vanadium. These ores are beneficiated essentially similarly to banded iron formation ores, but usually are more easily upgraded via crushing and screening . The typical titanomagnetite concentrate grades 57% Fe, 12% Ti, and 0.5% V 2 O 5 . For every one ton of iron ore concentrate produced, approximately 2.5–3.0 tons of iron ore tailings will be discharged. Statistics show that there are 130 million tons of iron ore tailings discharged every year. If, for example,

949-632: A value of $ 2.3 billion. 46% of Canada's iron ore comes from the Iron Ore Company of Canada mine, in Labrador City , Newfoundland , with secondary sources including the Mary River Mine in Nunavut . According to the U.S. Geological Survey's 2021 Report on iron ore, India is estimated to produce 59,000,000 t (58,000,000 long tons; 65,000,000 short tons) of iron ore in 2020, placing it as

1022-792: Is a county located in the Arrowhead Region of the U.S. state of Minnesota . As of the 2020 census , the population was 200,231. Its county seat is Duluth . It is the largest county in Minnesota by land area, and the largest in the United States by total area east of the Mississippi River . St. Louis County is included in the Duluth, MN–Superior, WI Metropolitan Statistical Area . Major industries include pulpwood production and tourism . Open pit mining of taconite and processing it into high grade iron ore remains an important part of

1095-477: Is a 1,090,000-acre (4,400 km ) wilderness area designated for fishing, camping, hiking, and canoeing, and is one of the most visited wilderness areas in the United States. St. Louis County has more than 500 lakes. The largest lakes are Pelican and Vermilion . The "Hill of Three Waters" on the Laurentian Divide lies northeast of Hibbing . Rainfall on this hill runs to three watersheds: Hudson Bay to

1168-511: Is a high-volume, low-margin business, as the value of iron is significantly lower than base metals. It is highly capital intensive, and requires significant investment in infrastructure such as rail in order to transport the ore from the mine to a freight ship. For these reasons, iron ore production is concentrated in the hands of a few major players. World production averages 2,000,000,000 t (2.0 × 10 long tons; 2.2 × 10 short tons) of raw ore annually. The world's largest producer of iron ore

1241-428: Is expected to rise by a CAGR of 2% between 2023 and 2027, and industry analyst Fitch Solutions forecasted in 2021 that Brazil's annual production will reach 592,000,000 t (583,000,000 long tons; 653,000,000 short tons) by 2030. In 2017, Canadian iron ore mines produced 49,000,000 t (48,000,000 long tons; 54,000,000 short tons) of iron ore in concentrate pellets and 13.6 million tons of crude steel. Of

1314-510: Is followed by Japan and Korea, which consume a significant amount of raw iron ore and metallurgical coal . In 2006, China produced 588,000,000 t (579,000,000 long tons; 648,000,000 short tons) of iron ore, with an annual growth of 38%. Over the last 40 years, iron ore prices have been decided in closed-door negotiations between the small handful of miners and steelmakers which dominate both spot and contract markets. Until 2006, prices were determined in annual benchmark negotiations between

1387-478: Is in the iron ranges around Lake Superior . These iron ranges occur in Minnesota and Michigan, which combined accounted for 93% of the usable iron ore produced in the United States in 2014. Seven of the nine operational open pit mines in the United States are located in Minnesota as well as two of the three tailings reclamation operations. The other two active open pit mines were located in Michigan . In 2016, one of

1460-693: Is mined extensively in Brazil as of 2019, which exports significant quantities to Asia , and there is a nascent and large magnetite iron ore industry in Australia . Direct-shipping iron ore (DSO) deposits (typically composed of hematite ) are currently exploited on all continents except Antarctica , with the largest intensity in South America , Australia, and Asia. Most large hematite iron ore deposits are sourced from altered banded iron formations and (rarely) igneous accumulations. DSO deposits are typically rarer than

1533-509: Is named. The city of Cloquet is located in adjacent Carlton County . Recreational activities offered at the Indian Lake campground within the forest include camping, fishing, and a canoe route on the Cloquet River. The Superior National Forest is located immediately north of the Cloquet Valley State Forest. Saint Louis County Road 4 and County Road 44 are two of the main routes in

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1606-456: Is the raw material used to make pig iron , which is one of the main raw materials to make steel —98% of the mined iron ore is used to make steel. In 2011 the Financial Times quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil ". Metallic iron is virtually unknown on

1679-476: Is the Brazilian mining corporation Vale , followed by Australian companies Rio Tinto Group and BHP . A further Australian supplier, Fortescue Metals Group Ltd, has helped bring Australia's production to first in the world. The seaborne trade in iron ore—that is, iron ore to be shipped to other countries—was 849,000,000 t (836,000,000 long tons; 936,000,000 short tons) in 2004. Australia and Brazil dominate

1752-425: Is used to produce sponge iron (Fe) to be used for steel-making. Direct reduction requires more energy, as the temperatures are higher and the time is longer and it requires more reducing agent than magnetizing roasting. Lower-grade sources of iron ore generally require beneficiation , using techniques like crushing, milling , gravity or heavy media separation , screening, and silica froth flotation to improve

1825-467: Is usually found in the form of magnetite ( Fe 3 O 4 , 72.4% Fe), hematite ( Fe 2 O 3 , 69.9% Fe), goethite ( FeO(OH) , 62.9% Fe), limonite ( FeO(OH)·n(H 2 O) , 55% Fe), or siderite ( FeCO 3 , 48.2% Fe). Ores containing very high quantities of hematite or magnetite, typically greater than about 60% iron, are known as natural ore or direct shipping ore , and can be fed directly into iron-making blast furnaces . Iron ore

1898-878: The Chichester Range , the Hamersley Range and Koolyanobbing , Western Australia . Other types of ore are coming to the fore recently, such as oxidised ferruginous hardcaps, for instance laterite iron ore deposits near Lake Argyle in Western Australia. The total recoverable reserves of iron ore in India are about 9,602,000,000 t (9.450 × 10 long tons; 1.0584 × 10 short tons) of hematite and 3,408,000,000 t (3.354 × 10 long tons; 3.757 × 10 short tons) of magnetite . Chhattisgarh , Madhya Pradesh , Karnataka , Jharkhand , Odisha , Goa , Maharashtra , Andhra Pradesh , Kerala , Rajasthan , and Tamil Nadu are

1971-598: The Earth 's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths . Although iron is the fourth-most abundant element in the Earth's crust , composing about 5%, the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive amount of energy. Therefore, all sources of iron used by human industry exploit comparatively rarer iron oxide minerals, primarily hematite . Prehistoric societies used laterite as

2044-555: The Pilbara region of Western Australia is approximately 844,000,000 t (831,000,000 long tons; 930,000,000 short tons) per year and rising. Gavin Mudd ( RMIT University ) and Jonathon Law ( CSIRO ) expect it to be gone within 30–50 years and 56 years, respectively. These 2010 estimates require ongoing review to take into account shifting demand for lower-grade iron ore and improving mining and recovery techniques (allowing deeper mining below

2117-531: The United States Census Bureau , the county has a total area of 6,860 square miles (17,800 km ), of which 6,247 square miles (16,180 km ) is land and 612 square miles (1,590 km ) (8.9%) is water. It is the largest county in Minnesota and the largest (by total area) in the United States east of the Mississippi River. St. Louis County is the only county in the United States which has

2190-407: The silicate mineral fragments will float and can be removed. Iron is the world's most commonly used metal—steel, of which iron ore is the key ingredient, represents almost 95% of all metal used per year. It is used primarily in structures, ships, automobiles, and machinery. Iron-rich rocks are common worldwide, but ore-grade commercial mining operations are dominated by the countries listed in

2263-420: The 13,600,000 t (13,400,000 long tons; 15,000,000 short tons) of steel 7,000,000 t (6,900,000 long tons; 7,700,000 short tons) was exported, and 43,100,000 t (42,400,000 long tons; 47,500,000 short tons) of iron ore was exported at a value of $ 4.6 billion. Of the iron ore exported, 38.5% of the volume was iron ore pellets with a value of $ 2.3 billion, and 61.5% was iron ore concentrates with

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2336-435: The 2010–2015 American Community Survey , the ancestral makeup was 24.3% German , 15.9% Norwegian , 13.0% Swedish , and 10.2% Irish . As of the census of 2000, there were 200,528 people, 82,619 households, and 51,389 families in the county. The population density was 32 people per square mile (12 people/km ). There were 95,800 housing units at an average density of 15 per square mile (5.8/km ). The racial makeup of

2409-680: The 62–64% Fe range. Granite and ultrapotassic igneous rocks were sometimes used to segregate magnetite crystals and form masses of magnetite suitable for economic concentration. A few iron ore deposits, notably in Chile , are formed from volcanic flows containing significant accumulations of magnetite phenocrysts . Chilean magnetite iron ore deposits within the Atacama Desert have also formed alluvial accumulations of magnetite in streams leading from these volcanic formations. Some magnetite skarn and hydrothermal deposits have been worked in

2482-424: The Cloquet Valley State Forest area. County Road 4 runs north–south through the middle of the forest between Island Lake and the community of Markham . County Road 44 runs north–south through the eastern portion of the forest, passing through the community of Brimson at the northeast corner of the forest. County Road 52 runs east–west through the northwest part of the forest, east of Cotton , passing through

2555-687: The Cloquet Valley State Forest as well including: Bald Eagles, Great Horned Owls, and Common Loons. Fish found in the waters of the state forest include: Walleye, Musky, Northern Pike, Large/Small Mouth Bass, Yellow Perch, Sunfish and Crappie. Biome The Cloquet Valley State Forest sits within the Coniferous forest biome of northeastern Minnesota. Large stands of red and white pine can be found in this forest along with other coniferous trees such as Spruce, Fir, and Tamarack. Mixed in with these conifers are large portions of forest made up of Aspen and Birch. St. Louis County, Minnesota St. Louis County

2628-429: The United States is estimated to have accounted for 2% of the world's iron ore output. In the United States there are twelve iron ore mines, with nine being open pit mines and three being reclamation operations. There were also ten pelletizing plants, nine concentration plants, two direct-reduced iron (DRI) plants, and one iron nugget plant that were operating in 2014. In the United States the majority of iron ore mining

2701-438: The community of Whiteface . County Road 49 runs east–west through the western portion of the forest. The majority of CR 49 is unpaved gravel surface. Harris Road runs east–west through the southwest part of the forest. The entire route of Harris Road is unpaved gravel surface. County Road 547 / UT Road 9230 runs generally east–west through the northern portion of the forest in two separate segments. The first section of

2774-411: The concentration of the ore and remove impurities. The results, high-quality fine ore powders, are known as fines. Magnetite is magnetic , and hence easily separated from the gangue minerals and capable of producing a high-grade concentrate with very low levels of impurities. The grain size of the magnetite and its degree of commingling with the silica groundmass determine the grind size to which

2847-533: The country's " economic demonstrated resources " of iron currently amount to 24 gigatonnes , or 24,000,000,000 t (2.4 × 10 long tons; 2.6 × 10 short tons). Another estimate places Australia's reserves of iron ore at 52,000,000,000 t (5.1 × 10 long tons; 5.7 × 10 short tons), or 30% of the world's estimated 170,000,000,000 t (1.7 × 10 long tons; 1.9 × 10 short tons), of which Western Australia accounts for 28,000,000,000 t (2.8 × 10 long tons; 3.1 × 10 short tons). The current production rate from

2920-531: The county in a statewide election since 1992. The only time a Democrat obtained less than 50% of the vote was in 1998, when Jesse Ventura of the Reform ticket won statewide; some 24% of the county voted for him. Since 1992, the only time when a Republican obtained more than 34% of the vote was in the elections of 1994 (the year of the Republican Revolution ) when the incumbent Independent-Republican governor won

2993-512: The county was Herbert Hoover in 1928, before the Great Depression. In recent elections, Republicans have received about 1/3rd of the county's vote. In 2016, Donald Trump earned 39.7% of the county's vote, while the Democratic vote deteriorated to 51.4% (the lowest percentage since 1932); according to exit polls, this was due to residents' concerns about the decline of mining and forestry in

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3066-553: The county was 94.9% White, 0.9% Black or African American, 2.0% Native American, 0.7% Asian, nil% Pacific Islander , 0.2% from other races, and 1.4% from two or more races. 0.8% of the population were Hispanic or Latino of any race. 27.6% of households included children under the age of 18, 49.3% were married couples living together, 9.4% had a female householder with no husband present, and 37.8% were non-families. 31.2% of all households consisted of individuals, and 13.0% of individuals 65 years of age or older. The average household size

3139-522: The county. This was the closest that a Republican had come to winning the county since 1932. In 2020 , Trump became the first Republican since Herbert Hoover to get more than 40% of the vote in St. Louis County, but Joe Biden bolstered the Democratic margin of victory from 11.7% to 15.6%. St. Louis County is in Minnesota's 8th congressional district . For 36 years it was represented by Democrat Jim Oberstar . He

3212-584: The depletion of high-grade hematite ores in the United States, led after World War II to the development of lower-grade iron ore sources, principally the use of magnetite and taconite . Iron ore mining methods vary by the type of ore being mined. There are four main types of iron ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite , massive hematite, and pisolitic ironstone deposits. The origin of iron can be ultimately traced to its formation through nuclear fusion in stars, and most of

3285-563: The economy of the Iron Range and is directly tied to shipping in the twin ports of Duluth and Superior. Parts of the federally recognized Bois Forte and Fond du Lac Indian reservations are in the county. This area was long inhabited by Algonquian -speaking tribes: the Ojibwe (Chippewa), Ottawa and Potawatomi peoples were loosely affiliated in the Council of Three Fires . As American settlers entered

3358-442: The gangue is separated during the beneficiation process and is removed as tailings . Taconite tailings are mostly the mineral quartz , which is chemically inert. This material is stored in large, regulated water settling ponds. The key parameters for magnetite ore being economic are the crystallinity of the magnetite, the grade of the iron within the banded iron formation host rock, and the contaminant elements which exist within

3431-789: The groundwater table). Brazil is the second-largest producer of iron ore after Australia, accounting for 16% of the world's iron ore production. After a somewhat sluggish production volume 2010-2020, partly due to the Mariana dam disaster in 2015 and the Brumadinho dam disaster in 2019, which halted the production at the two involved mines, production has increased steadily since 2021, when Brazil produced 431,000,000 t (424,000,000 long tons; 475,000,000 short tons). In 2022 it increased to 435,000,000 t (428,000,000 long tons; 480,000,000 short tons) and in 2023 to 440,000,000 t (430,000,000 long tons; 490,000,000 short tons). The Brazilian production

3504-450: The iron and carbon smelting must be kept in an oxygen-deficient (reducing) state to promote the burning of carbon to produce CO and not CO 2 . The inclusion of even small amounts of some elements can have profound effects on the behavioral characteristics of a batch of iron or the operation of a smelter. These effects can be both good and bad, some catastrophically bad. Some chemicals are deliberately added, such as flux, which makes

3577-413: The iron from the oxygen, a stronger elemental bond must be presented to attach to the oxygen. Carbon is used because the strength of a carbon-oxygen bond is greater than that of the iron-oxygen bond at high temperatures. Thus, the iron ore must be powdered and mixed with coke , to be burnt in the smelting process. Carbon monoxide is the primary ingredient of chemically stripping oxygen from iron. Thus,

3650-889: The iron is thought to have originated in dying stars that are large enough to explode as supernovae . The Earth's core is thought to consist mainly of iron, but this is inaccessible from the surface. Some iron meteorites are thought to have originated from asteroids 1,000 km (620 mi) in diameter or larger. Banded iron formations (BIFs) are sedimentary rocks containing more than 15% iron composed predominantly of thinly-bedded iron minerals and silica (as quartz ). Banded iron formations occur exclusively in Precambrian rocks, and are commonly weakly-to-intensely metamorphosed . Banded iron formations may contain iron in carbonates ( siderite or ankerite ) or silicates ( minnesotaite , greenalite , or grunerite ), but in those mined as iron ores, oxides ( magnetite or hematite ) are

3723-423: The magnetite concentrate. The size and strip ratio of most magnetite resources is irrelevant, as a banded iron formation can be hundreds of meters thick, extend hundreds of kilometers along strike , and can easily come to more than three billion or more tonnes of contained ore. The typical grade of iron at which a magnetite-bearing banded iron formation becomes economic is roughly 25% iron, which can generally yield

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3796-476: The magnetite-bearing BIF or other rocks which form its main source, or protolith rock, but are considerably cheaper to mine and process as they require less beneficiation due to the higher iron content. However, DSO ores can contain significantly higher concentrations of penalty elements, typically being higher in phosphorus, water content (especially pisolite sedimentary accumulations), and aluminium ( clays within pisolites). Export-grade DSO ores are generally in

3869-399: The main iron ore producers ( BHP Billiton , Rio Tinto , and Vale S.A. ) and Japanese importers. In 2006, Chinese company Baosteel began handling negotiations for the importer side. The Chinese government replaced Baosteel with China Iron and Steel Association as lead negotiator in 2009. Traditionally, the first deal reached between these the major producers and the major importers sets

3942-567: The median income for a family was $ 47,134. Males had a median income of $ 37,934 versus $ 24,235 for females. The per capita income for the county was $ 18,982. About 7.2% of families and 12.1% of the population were below the poverty line , including 13.1% of those under age 18 and 8.9% of those age 65 or over. St. Louis County is governed by an elected and nonpartisan board of commissioners . In Minnesota, county commissions usually have five members, but St. Louis, Hennepin , and Ramsey counties have seven-member boards. Each commissioner represents

4015-410: The mine tailings contain an average of approximately 11% iron, there would be approximately 1.41 million tons of iron wasted annually. These tailings are also high in other useful metals such as copper , nickel , and cobalt , and they can be used for road-building materials like pavement and filler and building materials such as cement, low-grade glass, and wall materials. While tailings are

4088-873: The north, the Gulf of Saint Lawrence to the east (via Lake Superior ), or the Gulf of Mexico to the south and west (via the Mississippi River). The county is drained by the St. Louis , Vermilion , and other rivers. Duluth on Lake Superior is one of the most important fresh-water ports in the United States. The county encompasses part of the Iron Range . It has had a significant taconite mining industry, with active mines located in Hibbing, Mountain Iron, Eveleth, Virginia, and Babbitt, in addition to Keewatin in Itasca County . The county has

4161-504: The past as high-grade iron ore deposits requiring little beneficiation . There are several granite-associated deposits of this nature in Malaysia and Indonesia . Other sources of magnetite iron ore include metamorphic accumulations of massive magnetite ore such as at Savage River , Tasmania , formed by shearing of ophiolite ultramafics . Another, minor, source of iron ores are magmatic accumulations in layered intrusions which contain

4234-473: The principal Indian producers of iron ore. World consumption of iron ore grows 10% per year on average with the main consumers being China, Japan, Korea, the United States, and the European Union. China is currently the largest consumer of iron ore, which translates to be the world's largest steel producing country. It is also the largest importer, buying 52% of the seaborne trade in iron ore in 2004. China

4307-474: The principal iron mineral. Banded iron formations are known as taconite within North America. The mining involves moving tremendous amounts of ore and waste. The waste comes in two forms: non-ore bedrock in the mine ( overburden or interburden locally known as mullock), and unwanted minerals, which are an intrinsic part of the ore rock itself ( gangue ). The mullock is mined and piled in waste dumps , and

4380-429: The quartz is left behind when the resultant powder is passed under a magnetic separator. Generally, most magnetite banded iron formation deposits must be ground to between 32 and 45 μm (0.0013 and 0.0018 in) in order to produce a low-silica magnetite concentrate. Magnetite concentrate grades are generally in excess of 70% iron by weight and usually are low in phosphorus, aluminium, titanium, and silica and demand

4453-407: The rock must be comminuted to enable efficient magnetic separation to provide a high-purity magnetite concentrate. This determines the energy inputs required to run a milling operation. Mining of banded iron formations involves coarse crushing and screening, followed by rough crushing and fine grinding to comminute the ore to the point where the crystallized magnetite and quartz are fine enough that

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4526-437: The route runs between Whiteface towards Markham. The second section of the route runs from near Markham to Brimson. The entire route of CR 547 / UT 9230 is unpaved gravel surface. Fauna The Cloquet Valley State Forest is home to many different animals. Among the animals that live in the forest there are: Pine Marten, Beaver, Otter, Wolves, Bear, White Tail Deer, Fox, Moose, and Lynx. Numerous species of birds can be found in

4599-446: The seaborne trade, with 72% of the market. BHP, Rio and Vale control 66% of this market between them. In Australia , iron ore is won from three main sources: pisolite " channel iron deposit " ore derived by mechanical erosion of primary banded-iron formations and accumulated in alluvial channels such as at Pannawonica, Western Australia ; and the dominant metasomatically altered banded iron formation -related ores such as at Newman ,

4672-459: The seventh largest global center of iron ore production, behind Australia, Brazil, China, India, Russia, and South Africa. Producers of iron ore in Ukraine include Ferrexpo , Metinvest , and ArcelorMittal Kryvyi Rih . In 2014, mines in the United States produced 57,500,000 t (56,600,000 long tons; 63,400,000 short tons) of iron ore with an estimated value of $ 5.1 billion. Iron mining in

4745-451: The seventh-largest global center of iron ore production, behind Australia, Brazil, China, Russia, South Africa, and Ukraine. India's iron ore production in 2023 was 285,000,000 metric tonnes and was the fourth largest producer in the world. According to the U.S. Geological Survey's 2021 Report on iron ore, Ukraine is estimated to have produced 62,000,000 t (61,000,000 long tons; 68,000,000 short tons) of iron ore in 2020, placing it as

4818-544: The statewide vote by a landslide of more than 60%, and when the Independent-Republican senatorial candidate won election with 49% statewide, both of which are rare occurrences in Minnesota. St. Louis County has long been one of the strongest Democratic bastions in the state outside of the Twin Cities. The Democrats have carried the county for 24 consecutive presidential elections; the last Republican candidate to carry

4891-401: The table aside. The major constraint to economics for iron ore deposits is not necessarily the grade or size of the deposits, because it is not particularly hard to geologically prove enough tonnage of the rocks exist. The main constraint is the position of the iron ore relative to market, the cost of rail infrastructure to get it to market, and the energy cost required to do so. Mining iron ore

4964-534: The territory, the Native Americans were pushed to outer areas. The Minnesota Legislature established St. Louis County on February 20, 1855, as Doty County, and changed its name to Newton County on March 3, 1855. It originally consisted of the area east and south of the St. Louis River , while the area east of the Vermilion River and north of the St. Louis River was part of Superior County. Superior County

5037-589: The two mines shut down. There have also been iron ore mines in Utah and Alabama ; however, the last iron ore mine in Utah shut down in 2014 and the last iron ore mine in Alabama shut down in 1975. Iron ores consist of oxygen and iron atoms bonded together into molecules. To convert it to metallic iron, it must be smelted or sent through a direct reduction process to remove the oxygen. Oxygen-iron bonds are strong, and to remove

5110-411: Was 2.32 and the average family size was 2.90. The population contained 22.4% under the age of 18, 11.4% from 18 to 24, 25.9% from 25 to 44, 24.3% from 45 to 64, and 16.1% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 96.8 males. For every 100 females age 18 and over, there were 93.8 males. The median income for a household in the county was $ 36,306, and

5183-644: Was attributed to changes in the global jet stream due to the climate change. Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race. As of the census of 2010, there were 200,226 people in the county. The racial makeup of the county was 94.0% White , 2.2% Native American , 0.4% Black or African American , 0.9% Asian , 0.2% of some other race and 2.3% of two or more races . 1.2% were Hispanic or Latino (of any race). According to

5256-698: Was defeated in 2010 by Republican Chip Cravaack . Two years later Cravaack was defeated by Democrat Rick Nolan , who represented the district until his retirement in 2019. Republican St. Louis County commissioner Pete Stauber succeeded Nolan in one of three Democrat-to-Republican district flips in 2018, two of which happened in Minnesota. 47°35′N 92°28′W  /  47.58°N 92.46°W  / 47.58; -92.46 Iron ore Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron

5329-458: Was renamed St. Louis County. On March 1, 1856, that St. Louis County was renamed as Lake County . Newton County was renamed as St. Louis County and had that eastern area added to it; it was also expanded westward by incorporating parts of Itasca County , which then also included most of Carlton County . On May 23, 1857, St. Louis County took its current shape when Carlton County was formed from parts of St. Louis and Pine counties. According to

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