|
Hecla Mining
Hecla Mining is a gold, silver, and other precious metals mining company based in Coeur d'Alene, Idaho, Coeur d'Alene, Idaho. Founded in 1891, it is the second-largest mining company that produces silver in the country. This area is known as the Silver Valley (Idaho). In 1983, this entire area was designated as a Superfund site by the United States Environmental Protection Agency, Environmental Protection Agency, because of land, water, and air contamination resulting from a century of mostly unregulated silver and gold mining. History James Toner filed the Hecla claim on 5 May 1885. He passed on the claim to A.P. Horton, who sold it to George W. Hardesty and Simon Healey. Patrick (Patsy) Clark owned the claim outright by 1 July 1891. On 29 Sept. 1891, Clark formed the Hecla Mining Company with Albert Gross and Charles Kipp. On 14 Oct. 1891, the company was incorporated in Idaho by Clark, Charles Kipp, John A. Finch, Amasa B. (Mace) Campbell, John Dorsey, Healey and Hardest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of share capital, stock which are intended to be freely traded on a stock exchange or in over-the-counter (finance), over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listing (finance), listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states and so have associations and formal designations, which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation, though a corporation need not be a public company. In the United Kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salida, Colorado
Salida ( ; Spanish language: , "exit") is the statutory city that is the county seat and the most populous municipality of Chaffee County, Colorado, United States. The population was 5,666 at the 2020 census. History The Arkansas, Colorado, post office opened on June 16, 1880, but was renamed Salida on March 28, 1881. Salida, meaning "exit" in Spanish, was named on account of its location near the point where the Arkansas River flows out of the valley and into Bighorn Sheep Canyon, upstream from the Royal Gorge. The Town of Salida was incorporated on March 23, 1891. The Denver & Rio Grande Railroad built their 3 foot narrow-gauge railroad up from Texas Creek and built a station at Salida, known at the time as "South Arkansas" in 1880. bypassing the nearby community of Cleora. Rather than risk their settlement withering away from lack of rail service, it is said that the population of Cleora moved to Salida ''en masse''. That same year, the railroad continued from "South ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphuric Acid
Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen, and hydrogen, with the molecular formula . It is a colorless, odorless, and viscous liquid that is miscible with water. Pure sulfuric acid does not occur naturally due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is a strong oxidant with powerful dehydrating properties, making it highly corrosive towards other materials, from rocks to metals. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid but, to the contrary, dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus, the reverse procedure of adding water to the acid is generally avoided since the heat released may boil the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Smelting
Zinc smelting is the process of converting zinc concentrates ( ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point. At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific measures are taken to prevent it. The most common zinc concentrate processed is zinc sulfide,. which is obtained by concentrating sphalerite via froth flotation. Secondary (recycled) zinc material, such as zinc oxide, is also processed with the zinc sulfide.. Approximately 30% of all zinc produced is from recycled sources. Methods There are two methods of smelting zinc: the pyrometallurgical process and the electrolysis process. Both methods are still used. Both of these processes share the same first step: roasting. Roasting Roasting is a process of oxidizing zinc sulfide concentrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolytic
An electrolyte is a substance that conducts electricity through the movement of ions, but not through the movement of electrons. This includes most soluble salts, acids, and bases, dissolved in a polar solvent like water. Upon dissolving, the substance separates into cations and anions, which disperse uniformly throughout the solvent. Solid-state electrolytes also exist. In medicine and sometimes in chemistry, the term electrolyte refers to the substance that is dissolved. Electrically, such a solution is neutral. If an electric potential is applied to such a solution, the cations of the solution are drawn to the electrode that has an abundance of electrons, while the anions are drawn to the electrode that has a deficit of electrons. The movement of anions and cations in opposite directions within the solution amounts to a current. Some gases, such as hydrogen chloride (HCl), under conditions of high temperature or low pressure can also function as electrolytes. Electrolyte so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunker Hill Mining Company
The Bunker Hill Mining Company is a mining company with facilities in Kellogg and Wardner, Idaho. Early history Simeon Reed bought the Bunker Hill Mine and Mill, and incorporated the Bunker Hill and Sullivan Mining and Concentrating Company on 29 July 1887. John Hays Hammond was hired to manage the mine, and a new concentrator, The Old South Mill, became operational in 1891, capable of 150 tons per day. Hammond became president on 2 July 1891, followed by Nathaniel H. Harris on 15 June 1893, when company headquarters were located in San Francisco. William Henry Crocker, of Crocker National Bank, served as treasurer, in addition to being the major stockholder. When the mining boom began in the Coeur d'Alene, Idaho mining district, the area was lightly inhabited. The Bunker Hill and the Sullivan companies built a boarding house for miners in 1887. By 1894, the company employed 332 workers, and in the late 1890s, the company built single-family houses to attract family men ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine Shaft
Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. Shallow shafts, typically sunk for civil engineering projects, differ greatly in execution method from deep shafts, typically sunk for mining projects. Shaft sinking is one of the most difficult of all mining development methods: restricted space, gravity, groundwater and specialized procedures make the task quite formidable. Shafts may be sunk by conventional drill and blast or mechanised means. Historically, mine shaft sinking has been among the most dangerous of all the mining occupations and the preserve of mining contractors called sinkers. Today shaft sinking contractors are concentrated in Canada, Germany, China and South Africa. The modern shaft sinking industry is gradually shifting further towards greater mechanisation. Recent innovations in the form of full-face shaft boring (akin to a vertical tunnel boring machine) have sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kellogg, Idaho
Kellogg is a city in the Silver Valley (Idaho), Silver Valley of Shoshone County, Idaho, Shoshone County, Idaho, United States, in the Idaho Panhandle region. The city lies near the Coeur d'Alene National Forest and about 36 miles (58 km) east-southeast of Coeur d'Alene, Idaho, Coeur d'Alene along Interstate 90 in Idaho, Interstate 90. As of the 2010 United States Census, the city had a total population of 2,120, down by a third from its population in 1980. History Kellogg was incorporated in 1907. The city limits included mine property in 1955, and smelter property in 1956. The population in 1960 was about 6000. Kellogg is named after a Prospecting, prospector named Noah Kellogg. The city became a center of mining for silver. Nearly a century of mine operations produced an extensive amount of silver. There was also a history of Coeur d'Alene miners' dispute, disputes between union miners and mine owners as workers tried to improve their conditions, including wages a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunker Hill Mine And Smelting Complex
The Bunker Hill Mine and Smelting Complex (colloquially the Bunker Hill smelter) was a large smelter located in Kellogg, Idaho, in the Coeur d'Alene Basin. When built, it was the largest smelting facility in the world.National Research Council, 200516/ref> It is located in what became known as the Silver Valley (Idaho), Silver Valley of the Coeur d'Alene Basin, an area for a century that was a center of extensive silver and other metal mining and processing. This resulted in extensive contamination of water, land and air, endangering residents including the Coeur d'Alene Tribe, which had traditionally depended on fish from the waterways as part of its subsistence. In 1983 the United States Environmental Protection Agency added this area to the National Priorities List as a Superfund site for investigation and cleanup. In 1991 the Coeur d'Alene Tribe filed suit against the mining companies for damages and cleanup costs; they were joined by the federal government in 1996 and the st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Curb Exchange
NYSE American, formerly known as the American Stock Exchange (AMEX), and more recently as NYSE MKT, is an American stock exchange situated in New York City. AMEX was previously a mutual organization, owned by its members. Until 1953, it was known as the New York Curb Exchange. NYSE Euronext acquired AMEX on October 1, 2008, with AMEX integrated with the Alternext European small-cap exchange and renamed the NYSE Alternext U.S. In March 2009, NYSE Alternext U.S. was changed to NYSE Amex Equities. On May 10, 2012, NYSE Amex Equities changed its name to NYSE MKT LLC. Following the SEC approval of competing stock exchange IEX in 2016, NYSE MKT rebranded as NYSE American and introduced a 350-microsecond delay in trading, referred to as a "speed bump", which is also present on the IEX. History The Curb market The exchange grew out of the loosely organized curb market of curbstone brokers on Broad Street in Manhattan. Efforts to organize and standardize the market started earl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallace, Idaho
Wallace, Idaho is a city in and the county seat of Shoshone County, Idaho, Shoshone County, Idaho, in the Silver Valley (Idaho), Silver Valley mining district of the Idaho Panhandle. Founded in 1884, Wallace sits alongside the South Fork of the Coeur d'Alene River (and Interstate 90 in Idaho, Interstate 90). The town's population was 791 at the United States Census, 2020, 2020 census. The Trail of the Coeur d'Alenes rails-to-trail passes through Wallace. History Gold was discovered in a stream about 12 miles north of the future Wallace in the spring of 1882. Migration to the region increased, especially during the following year. Eagle City, Prichard, Idaho, Prichard, Murrayville (now Murray, Idaho, Murray) and other mining camps were founded, and mining claims proliferated. Silver was also discovered. Founding and early years In the spring of 1884, Colonel William R. Wallace built a cabin at a site he called "Placer Center." A American Civil War, Civil War veteran, Wallace w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spokane, Washington
Spokane ( ) is the most populous city in eastern Washington and the county seat of Spokane County, Washington, United States. It lies along the Spokane River, adjacent to the Selkirk Mountains, and west of the Rocky Mountain foothills, south of the Canada–United States border, Canadian border, west of the Washington–Idaho border, and east of Seattle, along Interstate 90 in Washington, Interstate 90. Spokane is the economic and cultural center of the Spokane metropolitan area, the Spokane–Coeur d'Alene combined statistical area, and the Inland Northwest. It is known as the birthplace of Father's Day (United States), Father's Day, and locally by the nickname of "Lilac City". Officially, Spokane goes by the nickname of ''Hooptown USA'', due to Spokane's annual hosting of the Spokane Hoopfest, the world's largest basketball tournament. The city and the wider Inland Northwest area are served by Spokane International Airport, west of Downtown Spokane, which is located near a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
