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Perseverance Mine
The Alaska-Gastineau Mine (alternate: Perseverance Mine) was a gold mine in Perseverance, about east of Juneau, Alaska, USA. It was briefly the largest gold mine in the world. The mine was operated by the Alaska-Gastineau Mining Company. Geography The Alaska-Gastineau Mine was located within the Silver Bow Basin. Its concentrating plant was situated near Thane. The mine had a shaft running through Mount Roberts that reached the Perseverance Mine near Gold Creek. It adjoined the Alaska-Juneau Mine. The mine's low-grade ore is situated on a mountain above the Gastineau Channel. Its ore body covered approximately , more than in length, with of tunnels and crosscuts. According to Jackling, the block of ore had at least 100,000,000 tons above sea level. The property consisted of a group of claims whose lode system covered . It was operated on a 6,000-ton daily capacity. History The mine's large scale development began in 1912. In 1913, while it was under construction, Emile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silverbow Basin
The Silver Bow Basin, often written as Silverbow Basin, is a valley located northeast of Juneau, Alaska, USA. It is situated on Gold Creek in an area north of Icy Gulch, and approximately north of Gastineau Peak. A trail from Juneau leads directly to the mountainside. The basin was the site of the earliest gold discovery in the Juneau area, leading to the establishment of the town called Juneau. Etymology There are opposing theories as to who named the basin. One version states that it was named by Richard Harris after the mine in Silver Bow, Montana. Another theory is that it was named by a party of Montana miners in honor of their last camp in Montana. History Placer was found in the basin's Gold Creek in 1880 by Richard Harris and Joe Juneau. This gold discovery led to the creation of the town called Juneau. Over the next nine years, sluicing operations recovered thousands of ounces of gold. Sitka engineer George E. Pilz is closely connected to development in the basin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bartlett L
Bartlett may refer to: Places *Bartlett Bay, Canada, Arctic waterway * Wharerata, New Zealand, also known as Bartletts United States * Bartlett, Illinois ** Bartlett station, a commuter railroad station * Bartlett, Iowa * Bartlett, Kansas * Bartlett, Missouri * Bartlett, Nebraska * Bartlett, New Hampshire, a New England town ** Bartlett (CDP), New Hampshire, a village in the town ** Bartlett Haystack, a mountain * Bartlett, Ohio * Bartlett, Tennessee * Bartlett, Texas * Bartlett, Virginia * Bartlett Creek (other) * Bartlett Peak, a mountain in California * Bartlett Pond (Plymouth, Massachusetts) Other uses * Bartlett (surname) * ''Bartlett'' (TV series) * The Bartlett, the Faculty of the Built Environment at University College London * Bartlett Glacier, in Antarctica * Bartlett pear * ''Bartlett's Familiar Quotations'' or simply ''Bartlett's'' * Bartlett's test, in statistics * MV ''Bartlett'', former ferry in Alaska * USNS ''Bartlett'' (T-AGOR-13), American o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1912 Establishments In Alaska
Year 191 ( CXCI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Apronianus and Bradua (or, less frequently, year 944 ''Ab urbe condita''). The denomination 191 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Parthia * King Vologases IV of Parthia dies after a 44-year reign, and is succeeded by his son Vologases V. China * A coalition of Chinese warlords from the east of Hangu Pass launches a punitive campaign against the warlord Dong Zhuo, who seized control of the central government in 189, and held the figurehead Emperor Xian hostage. After suffering some defeats against the coalition forces, Dong Zhuo forcefully relocates the imperial capital from Luoyang to Chang'an. Before leaving, Dong Zhuo orders his troops to loot the tombs of the Ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mining In Alaska
Gold mining in Alaska, a state of the United States, has been a major industry and impetus for exploration and settlement since a few years after the United States acquired the territory in 1867 from the Russian Empire. Russian explorers discovered placer gold in the Kenai River in 1848, but no gold was produced. Gold mining started in 1870 from placers southeast of Juneau, Alaska. Gold occurs and has been mined throughout Alaska; except in the vast swamps of the Yukon Flats, and along the North Slope between the Brooks Range and the Beaufort Sea. Areas near Fairbanks and Juneau, and Nome have produced most of Alaska's historical output and provide all current gold production . Nearly all of the large and many of the small placer-gold mines currently operating in the US are in Alaska. Seven modern large-scale hard-rock mines operated in Alaska ; five were gold-producing mines. There are also small-scale hard-rock gold-mining operations. In 2019 Alaska produced 539,390 troy ounc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Juneau, Alaska
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artisti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mines In The United States
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pan Amalgamation
The pan amalgamation process is a method to extract silver from ore, using salt and copper(II) sulfate in addition to mercury. The process was widely used from 1609 through the 19th century; it is no longer used. The patio process had been used to extract silver from ore since its invention in 1557. One drawback of the patio process was the long treatment time, usually weeks. Alvaro Alonso Barba invented the faster ''pan'' process (in Spanish the ''cazo'' or ''fondo'' process) in 1609 in Potosí, Bolivia, in which ore was mixed with salt and mercury (and sometimes copper(II) sulfate) and heated in shallow copper vessels. The treatment time was reduced to 10 to 20 hours. Whether patio or pan amalgamation was used at a particular location often depended on climate (warmer conditions speeded the patio process) and the availability and cost of fuel to heat the pans. The amount of salt and copper(II) sulfate varied from one-quarter to ten pounds of one or the other, or both, per ton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Cyanidation
Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction. Cyanidation is also widely used in the extraction of silver, usually after froth flotation. Production of reagents for mineral processing to recover gold represents more than 70% of cyanide consumption globally. Other metals are recovered from the process include copper, zinc, and silver, but gold is the main driver of this technology. Due to the highly poisonous nature of cyanide, the process is controversial and its use is even banned in some parts of the world. Cyanide can be safely used in the gold mining industry. A key feature for safe use of cyanide is to ensure adequate pH control at an alkaline pH level above 10.5. At industrial scale, pH control is mainly achieved using lime, as an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel C
The Wake are a British post-punk, synth-pop and later indie pop band, formed in Glasgow in 1981 by Gerard "Caesar" McInulty (formerly of Altered Images), Steven Allen (drums) and Joe Donnelly (bass), the latter replaced by Bobby Gillespie. Steven's sister Carolyn Allen also joined on keyboards, and remained in the band thereafter. Gillespie left the band in 1983, replaced by Martin Cunning and then by Alexander 'Mac' Macpherson. History The Wake released their first single on their own Scan 45 label, coupling together "On Our Honeymoon" and "Give Up". This single eventually caught the attention of New Order (band), New Order manager Rob Gretton, who helped the band sign to Factory Records in 1982 and record an LP (''Harmony (The Wake album), Harmony'') at Strawberry Studios in Stockport. This was followed by a number of singles on Factory and its Belgian sister label Factory Benelux. In 1983, The Wake toured with New Order (band), New Order, and thus received critical attention ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mine
Gold Mine may refer to: *Gold Mine (board game) *Gold Mine (Long Beach), an arena *"Gold Mine", a song by Joyner Lucas from the 2020 album '' ADHD'' See also * ''Gold'' (1974 film), based on the novel ''Gold Mine'' by Wilbur Smith *Gold mining Gold mining is the extraction of gold resources by mining. Historically, mining gold from alluvial deposits used manual separation processes, such as gold panning. However, with the expansion of gold mining to ores that are not on the surface, ... * Goldmine (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastineau Channel
Gastineau Channel (Lingít: ''Séet Ká'') is a channel between the mainland of the U.S. state of Alaska and Douglas Island in the Alexander Archipelago of southeastern Alaska. It separates Juneau on the mainland side from Douglas (now part of Juneau), on Douglas Island. The first European to sight the channel was Joseph Whidbey early in August 1794, first from the south and later from the west. It was probably named for John Gastineau, an English civil engineer and surveyor. Characteristics The channel is navigable by large ships, only from the southeast, as far as the Douglas Bridge, approximately . Between the bridge and Juneau International Airport, approximately , it is navigable only by smaller craft and only at high tide. The channel is becoming increasingly unnavigable due to shallow water depths. The two principal causes for this are: # Isostatic rebound Post-glacial rebound (also called isostatic rebound or crustal rebound) is the rise of land masses after the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Roberts (Alaska)
Mount Roberts or Roberts Peak is a mountain just east of downtown Juneau, Alaska. It is noted for its accessibility from downtown Juneau and for the Goldbelt Tram which carries passengers and tourists from sea level to up the mountain. A trail head behind downtown leads to the top of the tram (with nearly 2 miles of steep switchbacks) and from that point to the summit where the views to the west overlook the harbor, West Juneau and Douglas Island Douglas Island is a tidal island in the U.S. state of Alaska. It is part of the city and borough of Juneau, just west of downtown Juneau and east of Admiralty Island. It is separated from mainland Juneau by the Gastineau Channel, and contains t .... __TOC__ See also References External links * Mountains of Alaska Mountains of Juneau, Alaska {{JuneauAK-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
