Mining

Mining is the extraction of valuable minerals and other geological materials from the earth, usually from an ore body, vein, or (coal) seam. Materials recovered by mining include coal, diamonds, limestone, bauxite, phosphate, rock salt, precious metals, iron, nickel, lead, tin, uranium, and molybdenum.In a broader sense, the term "mining" may also be applied to the extraction of …

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Minerals and Mining

Minerals and MiningMinerals are defined as naturally occurring solids found in the earth that are composed of matter other than plants or animals. Ore is a naturally occurring source of minerals, such as a rock. A mineral can be composed from one element, such as diamond, which contains only carbon, or several elements, such as quartz, which contains silicon and oxygen.

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Potosi

POTOS Í. POTOS Í. Potos í was a city and a region in Upper Peru (modern Bolivia) and was the most celebrated mining district in colonial Spanish America.With the discovery of silver at the Cerro Rico (Rich Hill) in 1545, Spaniards and Andeans rushed to exploit the fabulously rich ores, and the city of Potos í grew.. The first boom ended around 1560 with …

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A History of Silver Mining in the United States

Silver mining in the US kicked off in the mid-nineteenth century and the country experienced a genuine silver boom that spanned from 1859-1893. Prior to that, some silver was found in the …

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Panic of 1893

The Panic of 1893 touched off a nationwide economic depression that lasted for at least three years, threw millions out of work, and caused banks and businesses to fail across the country. In Colorado and other silver-mining states, the panic was tied to the abrupt collapse of the silver industry after two decades of explosive growth. When silver prices dropped, not only did mines …

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Silver in Antiquity

Silver was mined and smelted from ores such as lead carbonate (PbCO3) and galena (PbS). Ores usually contain less than 1% silver, but their abundance and lack of difficulty in smelting ensured ancient mining of the …

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Horace Tabor

Horace Tabor, known as the "Silver King," was born in Vermont in 1830. Tabor migrated to Kansas to farm in the mid-1850s. He married Augusta Pierce in 1857 and moved to Denver during the 1859 Gold Rush.He and Augusta began placer mining in Leadville, where a claim they had made proved to have a huge silver lode.Their mine, the Little Pittsburg, was exceptionally …

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Silver Mining: The Complete Guide | PhysicalGold

What is silver mining, and how is silver extracted? Silver mining involves extracting silver from the Earth's crust. Various methods, such as traditional mining, open-pit mining, and …

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Silver Mining

The silver in Arkansas is mixed sulfide ores of lead, zinc, copper, and antimony in small, scattered deposits in parts of the southern and eastern Ouachita Mountains. Most of the …

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Online Encyclopedia of Silver Marks, Hallmarks & Makers' …

Welcome This project has been 18 years in the making and now documents over 12,000 silver marks on 1,200+ pages and subpages. It is regularly updated as we find and photograph new examples of silver hallmarks and makers' marks.

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silver mining | Colorado Encyclopedia

In Colorado and other silver-mining states, the panic was tied to… St. Elmo. Located at an elevation of 10,000 feet in Chalk Creek Canyon southwest of Buena Vista, the historic mining town of St. Elmo was founded in 1880 and flourished for less than a decade. Although it is actually inhabited by a small handful of full-timers and…

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Leadville Mining District | Encyclopedia

LEADVILLE MINING DISTRICTLEADVILLE MINING DISTRICT, Colorado's longest lived, is located at the headwaters of the Arkansas River. In 1860, gold placers discovered in California Gulch spurred the first rush, but the gold was exhausted by 1865. A much bigger boom followed in the 1870s with the discovery that the local lead carbonate ore was rich in silver.

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Reserve Mining Corporation

Reserve Mining Corporation In 1947, the beginnings of one of the first classic cases of environmental conflict emerged when the Reserve Mining Corporation received permits to dump up to 67,000 tons per day of asbestos-like fiber tailings from its taconite mining operations in Silver Bay, Minnesota, into western Lake Superior. The Reserve case typifies the conflict that …

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Repartimiento

Repartimiento. Repartimiento (labor levy), the system of forced labor demanded of indigenous communities by the colonial state. In the Andes, the system was also known as the Mita, a Spanish adaptation of the Inca term mita and labor service in the mining zone was known as the mita de minas.Usually one-seventh of a community's male population between the ages of …

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Taxco

TaxcoTaxco, an important Mexican silver-mining center in the state of Guerrero, especially associated with the eighteenth-century mine owner José de la Borda. Knownas Tlachco ("place of the ball court") in pre-Hispanic times, it was a source of copper for the Mexica empire. Along with some iron ore, this copper was being worked by Indians under Spanish direction in the 1520s, …

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Silver Metallurgy

In the electrorefining process of copper, lead, and other metals, gold and silver in anode plate enter the anode mud. Silver and gold in copper or lead anode mud are in the simple substance state or form compounds with Au 2 Se, Ag 2 Se, Au 2 Te, Ag 2 Te, or AgCl. Usually, anode mud is enriched by pretreatment to produce precious metal enriched residue, then …

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History & Mining Culture of the Ore Mountains

The Ore Mountains (Erzgebirge) on the border between Germany and the Czech Republic is a region rich in history and culture connected to the mining industry. For centuries the cities on both sides of the mountain range had sustained themselves and flourished by the extraction of tin, copper, zinc, uranium, and most importantly silver.Even though the mines are …

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The Silver of the Conquistadors

The Silver Mines of Mexico. In Mesoamerica, silver was a valuable material, although not perhaps as much as gold, turquoise, and jade. The Maya, for example, had no source of the metal of their own in the lowlands.In 1547-8 …

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How is Silver Mined?

Silver must be mined from deep deposits, brought to the surface, and processed before it can be traded in the market. While many technologies exist, silver is typically mined through a process that uses gravity to break and …

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Comstock Lode

COMSTOCK LODE. The richest silver mine in the United States, the Comstock Lode also contained a large amount of gold.The ore deposit was found in 1857 at Mount Davidson in western Nevada, about 16 miles (26 kilometers) southeast of Reno.The discoverers Ethan Allen Grosh and Hosea Ballou Grosh, however, died before they could record the claim. . Prospector …

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Silver in Antiquity

Properties & Mining. Silver (Ag) is a soft metal which can be polished to produce an appealing lustre, two factors which made it ideal for ancient metalworkers to employ in their production of high-value goods. ... World History Encyclopedia is a non-profit organization publishing free history content that has been carefully researched and ...

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Mercury and Silver Mining in the Colonial Atlantic

At the same time in the American colonies, mining distorted economic life because of the incentives the industry received from a silver-hungry monarchy. Mining also had profound consequences for indigenous society, severely exploited to provide workers for the mines and refining mills.Colonial refiners used two methods to beneficiate their ...

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Anaconda Copper | Encyclopedia

ANACONDA COPPER. ANACONDA COPPER was one of the largest copper-mining companies in the world and the principal producer of the Butte district of Montana. It was organized in 1881 as the Anaconda Silver Mining Company when entrepreneur Marcus Daly, having persuaded James B. Haggin, Lloyd Tevis, and George Hearst to purchase for $30,000 the small Anaconda silver …

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The Ancient Origins of Silver Mining and Refining

A glimpse into the history of silver mining provides a deeper understanding of the white metal's role as an investment vehicle and store of wealth. Read on.

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Elizabeth "Baby Doe" Tabor | Colorado Encyclopedia

The Tabor mining fortune allowed the family to live comfortably through the 1880s and into the 1890s, as the Sherman Silver Purchase Act of 1890 supplemented their seemingly inexhaustible fortune. Calamity struck in 1893 with the repeal of the Sherman Act, which triggered the Panic of 1893 and plummeted many mining moguls into debt, including ...

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Mining Archives

Antimony (Sb) is a hard, brittle, silver-white metal with a relatively high specific gravity (6.69) and a rela... Bauxite Mining Bauxite is the principal ore of aluminum and is a mixture of aluminum oxides and hydroxides that formed from i...

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Mining

Description . Mining entails the extraction of ore, defined as rock from the earth's crust containing valuable minerals. It may also include quarrying, or the digging of sand, gravel or aggregate for construction purposes. Although the excavation of oil sands is similar, oil and gas production is not typically considered mining. Important Canadian mineral products include …

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Silver and Gold Mining Camps of the Old West: A State by …

Silver and Gold Mining Camps of the Old West: A State by State American Encyclopedia [Nestor, Sandy] on Amazon. *FREE* shipping on qualifying offers. Silver and Gold Mining Camps of the Old West: A State by State American Encyclopedia

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Silver mining in the United States

The Cerro Gordo Mines in Inyo County started producing lead and silver in 1860. Ore bodies were replacements and fissure fillings in Paleozoic limestone.In the 20th century zinc became the principal product. Silver was discovered at Calico in San Bernardino County in 1881, and mining was prosecuted strongly there until 1896.. Silver was discovered in 1919 in the …

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Silver Metallurgy

Silver metallurgy is the technology for extracting silver from gold ore or other silver-containing materials. Silver is one of the first metals that man used. Silver products from the …

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Iwami Ginzan Silver Mine

The Iwami Ginzan (, "Silver Mountain of Iwami") was a silver mine in the city of Ōda, Shimane Prefecture. [1] It was the largest silver mine in Japanese history. Iwami Ginzan was active for almost four hundred years. It was discovered in 1526 and closed in 1923. Today the mine has become an open-air museum.

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Mita

Coercion and Market: Silver Mining in Colonial Potosí, 1692–1826. Albuquerque: University of New Mexico Press, 1993. ... Encyclopedia gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association ...

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Precious Metal Mining in Colorado | Colorado Encyclopedia

From the 1850s to the 1920s, gold and silver mining drove Colorado's economy, making it into an urbanized, industrial state. The rapid development of Colorado's mineral resources had political, social, and environmental consequences. The mining of gold and silver in Colorado began in earnest during the Colorado Gold Rush of 1858–59. The state's first miners used metal pans to …

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