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Hecla Mining
Hecla Mining is a gold, silver and other precious metals mining company based in Coeur d'Alene, Idaho. Founded in 1891, 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 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 Hardesty, and 500,000 shares issued. By 1897, the mine had three tunnels and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (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 therefore 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 Kingdom it is usually a public limited company (plc), i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salida, Colorado
The City of Salida ( ; spanish language, Spanish: , "exit") is the Colorado municipalities#Statutory city, Statutory city that is the county seat and the List of cities and towns in Colorado, most populous municipality of Chaffee County, Colorado, Chaffee County, Colorado, United States. The population was 5,666 at the 2020 United States census, 2020 census. History A post office has been in operation at Salida since 1881. Salida, meaning "exit" in Spanish, was named on account of its location near where the Arkansas River flows out of the valley and into Bighorn Sheep Canyon, upstream from the Royal Gorge. File:CO Salida 1882.jpg, Map of Salida, 1882 File:Salida 1910.jpg, Panoramic View of Salida, 1910 File:Salida Depot 1910.jpg, Salida Depot, 1910 Geography According to the United States Census Bureau, the city has a total area of , and the Arkansas River, which runs through the town, is the major source of water for local agriculture. The Sawatch Range runs north and 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 exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. 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 should not be performed since the heat released may boil ... [...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 using the froth flotation method. 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 co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolytic
An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as 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. El ... [...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. I ... [...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 mine 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 shown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kellogg, Idaho
Kellogg is a city in the Silver Valley of 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 along 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 prospector named Noah Kellogg. After nearly a century of bustling activity in the mines, including a history of disputes between union miners and mine owners, the Bunker Hill Mine (& smelter) closed in 1981, leaving thousands out of work and a history of lead contamination. Other mines reduced operations, as well. Since the mines have closed, Kellogg has been moving more towards a resort town; the development of new condo ... [...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 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 state of Idaho in 2011. Se ... [...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 early in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallace, Idaho
Wallace, Idaho is a city in and the county seat of Shoshone County, Idaho, in the 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), approximately above sea level. The town's population was 784 at the 2010 census. Wallace is the principal town of the Coeur d'Alene silver-mining district, which produced more silver than any other mining district in the United States. Burke-Canyon Road runs through historic mining communities – many of them now deserted – north and eastward toward the Montana state line. The ghost town of Burke, Idaho is located to the northeast. East of Wallace, the ''Route of the Hiawatha'' (rails-to-trails) and the Lookout Pass ski area are popular with locals and tourists. History Wallace came into being on a river plain where four streams and five canyons converge onto the course of the South Fork. The earliest known white interest in the area w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spokane, Washington
Spokane ( ) is the largest city and county seat of Spokane County, Washington, United States. It is in eastern Washington, 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, I-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 annually hosting 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. According to the 2010 United States census, 2010 ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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