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Pine Point Mine
The Pine Point Mine is located on the south shore of Great Slave Lake between Hay River to the west and Fort Resolution to the east, in the Northwest Territories of Canada. It produced lead and zinc ores from a Mississippi Valley Type deposit between 1964 and 1988. Most of the mining was done by open-pit methods. The town of Pine Point was built by the mining company, Cominco, and when the mine closed the town was abandoned and demolished. History The Pine Point ore deposit was discovered in the late 19th century by fur traders at Fort Resolution who learned of the lead ores from the natives. A minor staking rush occurred in 1898 when Klondike prospectors heard rumours of silver at the location. There was no silver to be found, and although the lead ore was very rich, it was not feasible to mine the isolated deposit without good transportation to the south. The first major exploration work was done in 1928–1930 when several short shafts were sunk and a churn drill was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Slave Lake
Great Slave Lake (french: Grand lac des Esclaves), known traditionally as Tıdeè in Tłı̨chǫ Yatıì (Dogrib), Tinde’e in Wıìlıìdeh Yatii / Tetsǫ́t’ıné Yatıé (Dogrib / Chipewyan), Tu Nedhé in Dëne Sųłıné Yatıé (Chipewyan), and Tucho in Dehcho Dene Zhatıé (Slavey), is the second-largest lake in the Northwest Territories of Canada (after Great Bear Lake), the deepest lake in North America at , and the tenth-largest lake in the world by area. It is long and wide. It covers an area of in the southern part of the territory. Its given volume ranges from to and up to making it the 10th or 12th largest by volume. The lake shares its name with the First Nations peoples of the Dene family called Slavey by their enemies the Cree. Towns situated on the lake include (clockwise from east) Łutselk'e, Fort Resolution, Hay River, Hay River Reserve, Behchokǫ̀, Yellowknife, Ndilǫ, and Dettah. The only community in the East Arm is Łutselk'e, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver
Silver is a chemical element with the symbol Ag (from the Latin ', derived from the Proto-Indo-European ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, Dolomite (rock), dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German language, German in the late 19th century, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mineralization (geology)
In geology, mineralization is the deposition of economically important metals in the formation of ore bodies or "lodes" by various process. The first scientific studies of this process took place in the English county of Cornwall by J.W.Henwood FRS and later by R.W. Fox, FRS.Embrey, P. G. and Symes, R. F. ''Minerals of Cornwall and Devon'', London, British Museum of Natural History, 1987. hardback, 0-565-00989-3 paperback. page 14, and bibliography Fox: 135, Henwood: 137/8 The term can also refer to the process by which waterborne minerals, such as calcium carbonate (calcite), iron oxide (hematite or limonite) or silica (quartz), replace organic material within the body of an organism that has died and was buried by sediments. Mineralization may also refer to the product resulting from the process of mineralization. For example, mineralization (the process) may introduce metals (such as iron) into a rock. That rock may then be referred to as possessing iron mineralization. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taltson River
The Taltson River is a roughly river in the Northwest Territories of Canada that drains into the Great Slave Lake. There are three hydroelectric power control structures on the river, and one power station. Name The river was formerly known as the Copper Indian River in reference to the Dene known as the Yellowknives or Copper Indians. The name is derived from ''Tatsan'' which means "scum of water" and is an expression for copper. A 1918 government source says the name means "between high rocks". Other names formerly used include Copper Indian, Rocher, Rock, T'altsan and Yellow Knife. Basin The Taltson River basin has a subhumid, high boreal ecoclimate. Summer are typically cool and winters are very cold. The basin covers about in the region between Lake Athabasca and Great Slave Lake. It contains a complex of interconnected lakes that drain first in a southwest direction and then northward into the Slave River lowland zone. The Tazin River is a major tributary. There are three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concentrate
A concentrate is a form of substance that has had the majority of its base component (in the case of a liquid: the solvent) removed. Typically, this will be the removal of water from a solution or suspension, such as the removal of water from fruit juice. One benefit of producing a concentrate is that of a reduction in weight and volume for transportation, as the concentrate can be reconstituted at the time of usage by the addition of the solvent. Soft drink concentrates The process of concentrating orange juice was patented in 1939. It was originally developed to provide World War II troops with a reliable source of vitamin C. Most sodas and soft drinks are produced as highly concentrated syrups and later diluted with carbonated water directly before consumption or bottling. Such concentrated syrups are sometimes retailed to the end-consumer because of their relatively low price and considerable weight savings. Condensed milk is also produced for transport Trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mackenzie Northern Railway
The Mackenzie Northern Railway is a Canadian railway operating in Alberta and the Northwest Territories. It is the northernmost trackage of the contiguous North American railway network. Since being purchased by CN in 2006, it has been officially known as the Meander Subdivision. History The majority of the tracks which the Mackenzie Northern Railway uses were built by the federal government as the Great Slave Lake Railway, running from a point on the Northern Alberta Railways (NAR) at Grimshaw, Alberta, to the southern shores of Great Slave Lake at Hay River, Northwest Territories. The undertaking started in 1961 with a proposal to Parliament, and the line opened in 1964. This railroad was part of John Diefenbaker's vision for the north, and facilitated shipment of lead-zinc ore from the Pine Point Mine. The Great Slave Railway's operation was entrusted to Canadian National Railway in 1966, which had been operating the line on behalf of the federal government since it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian National Railway
The Canadian National Railway Company (french: Compagnie des chemins de fer nationaux du Canada) is a Canadian Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern and Southern United States. CN is Canada's largest railway, in terms of both revenue and the physical size of its rail network, spanning Canada from the Atlantic coast in Nova Scotia to the Pacific coast in British Columbia across approximately of track. In the late 20th century, CN gained extensive capacity in the United States by taking over such railroads as the Illinois Central. CN is a public company with 22,600 employees, and it has a market cap of approximately CA$90 billion. CN was government-owned, having been a Canadian Crown corporation from its founding in 1919 until being privatized in 1995. , Bill Gates is the largest single shareholder of CN stock, owning a 14.2% interest through Cascade Investment and his own Bill and Melinda Gates Foundation. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimshaw, Alberta
Grimshaw is a town in northern Alberta, Canada. It is approximately west of the Town of Peace River at the junction of Highway 2 and Highway 2A and along Mackenzie Northern Railway. By virtue of being the original starting point of Highway 35, which leads to the Northwest Territories, Grimshaw is referred to as Mile Zero of the Mackenzie Highway. History The town was named after Dr. M.E. Grimshaw, a pioneer doctor from Kingston, Ontario who settled in Peace River (then known as Peace River Crossing) in 1914. He practiced in the area for many years and also served at different capacities in the local government at the county and the village levels until 1922, retiring from politics as the mayor of Peace River. In 1929 he moved his family to Fairview, where he died in November of that year. Dr. Grimshaw would later be the posthumous father-in-law of actor John Carradine, who was married to Grimshaw's daughter, Doris Grimshaw (Doris Erving, Doris Rich), from 1957 until her ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Slave Railway
Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness, being divine, majestic, superior, majestic, or transcendent People * List of people known as "the Great" *Artel Great (born 1981), American actor Other uses * ''Great'' (1975 film), a British animated short about Isambard Kingdom Brunel * ''Great'' (2013 film), a German short film * Great (supermarket), a supermarket in Hong Kong * GReAT, Graph Rewriting and Transformation, a Model Transformation Language * Gang Resistance Education and Training Gang Resistance Education And Training, abbreviated G.R.E.A.T., provides a school-based, police officer instructed program that includes classroom instruction and various learning activities. Their intention is to teach the students to avoid gan ..., or GREAT, a school-based and police officer-instructed program * Global Research and Analysis Team (GReAT), a cybersecurity team at Kaspersky Lab *'' Great!'', a 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government Of Canada
The government of Canada (french: gouvernement du Canada) is the body responsible for the federal administration of Canada. A constitutional monarchy, the Crown is the corporation sole, assuming distinct roles: the executive, as the ''Crown-in-Council''; the legislature A legislature is an assembly with the authority to make law Law is a set of rules that are created and are enforceable by social or governmental institutions to regulate behavior,Robertson, ''Crimes against humanity'', 90. with its p ..., as the ''Crown-in-Parliament''; and the courts, as the ''Crown-on-the-Bench''. Three institutions—the Privy Council ( conventionally, the Cabinet); the Parliament of Canada; and the Judiciary of Canada, judiciary, respectively—exercise the powers of the Crown. The term "Government of Canada" (french: Gouvernement du Canada, links=no) more commonly refers specifically to the executive—Minister of the Crown, ministers of the Crown (the Cabinet) and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, massa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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