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Canadian Shield - Mining and economics | A Wisdom Archive on Canadian Shield - Mining and economics | | Canadian Shield - Mining and economics A selection of articles related to Canadian Shield - Mining and economics | |
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| ARTICLES RELATED TO Canadian Shield - Mining and economics | | | |  Canadian Shield - Mining and economics: Encyclopedia II - Derbyshire lead mining history - Mine ownership
Derbyshire lead mining history - The king's farmers and chief barmasters.
The coveted and valuable farm of the Duchy of Lancaster's right to the lead mine duties, coupled as it was with the office of chief barmaster, endowed its owner with both a considerable income and authority over the running of the industry. It was always resold at a much higher price than that charged by the Duchy, which was £110 plus annual payments of £72 for the duties and £1-6-8d for the barmastership.
Der ...
See also:Derbyshire lead mining history, Derbyshire lead mining history - Background, Derbyshire lead mining history - Mining methods, Derbyshire lead mining history - Technical change, Derbyshire lead mining history - Mining customs, Derbyshire lead mining history - Mine ownership, Derbyshire lead mining history - The king's farmers and chief barmasters, Derbyshire lead mining history - Chief barmasters and the 24, Derbyshire lead mining history - Deputy barmasters, Derbyshire lead mining history - Giving a mine, Derbyshire lead mining history - Collecting the dues, Derbyshire lead mining history - Title-holding and record keeping, Derbyshire lead mining history - Accidents, Derbyshire lead mining history - Mine drainage, Derbyshire lead mining history - Smelting by cupola, Derbyshire lead mining history - The end of lead-mining in Derbyshire Read more here: » Derbyshire lead mining history: Encyclopedia II - Derbyshire lead mining history - Mine ownership |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Brooke Shields - Family Her parents are the late Francis Alexander Shields who married Brooke´s mother, Maria Theresia Schmonn, in 1964. Her paternal grandparents are Francis Xavier Shields, (a tennis star) of Irish decent, and Italian princess Donna Marina Torlonia di Civitella-Cesi, who was a sister of Don Alessandro Torlonia, 5th Prince di Civitella-Cesi, the husband of the Spanish Infanta Beatrix of Bourbon-Battenberg (aunt of King Juan Carlos I of Spain). Their granddaughter Sibilla Weiller (b. 1968), Brooke's second cousin, married in 1994 Prince Guillaume of Luxembourg (b. 1963), a younger brother ...
See also:Brooke Shields, Brooke Shields - Career, Brooke Shields - Family, Brooke Shields - Postpartum depression, Brooke Shields - Filmography, Brooke Shields - TV work Read more here: » Brooke Shields: Encyclopedia II - Brooke Shields - Family |
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| | | | | | | Canadian Shield - Mining and economics: Encyclopedia II - Derbyshire lead mining history - Mining customs Everything about the old lead industry, from the mining of ore to its sale, stemmed from the ancient claim of the monarch to all mineral rights. The whole structure was designed to enable the Duchy of Lancaster, a royal possession, to collect the king's royalties and, since these were farmed out, the miners paid them to the king's farmer. By the seventeenth century the local holder of the mineral rights was also the barmaster, who ran the industry, helped by deputies responsible for the liberties, and by the miners juries of the Barmote Cour ...
See also:Derbyshire lead mining history, Derbyshire lead mining history - Background, Derbyshire lead mining history - Mining methods, Derbyshire lead mining history - Technical change, Derbyshire lead mining history - Mining customs, Derbyshire lead mining history - Mine ownership, Derbyshire lead mining history - The king's farmers and chief barmasters, Derbyshire lead mining history - Chief barmasters and the 24, Derbyshire lead mining history - Deputy barmasters, Derbyshire lead mining history - Giving a mine, Derbyshire lead mining history - Collecting the dues, Derbyshire lead mining history - Title-holding and record keeping, Derbyshire lead mining history - Accidents, Derbyshire lead mining history - Mine drainage, Derbyshire lead mining history - Smelting by cupola, Derbyshire lead mining history - The end of lead-mining in Derbyshire Read more here: » Derbyshire lead mining history: Encyclopedia II - Derbyshire lead mining history - Mining customs |
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| | | | | | | Canadian Shield - Mining and economics: Encyclopedia II - Brooke Shields - Career Brooke Shields had gained a very early start as she was a favorite as a child with the top fashion photographers in New York city at the time, not the least of which was the late Francesco Scavullo. Garry Gross, who later got sued by both Brooke and her mother over a lengthy battle for the copyright of these photographs, shot a famous series of photographs (one, that was auctioned at Christie's sold for near 1,000,000 USD) involving a very nude and explicit Brooke in heavy make-up when she was 10. It was this series which would lead to her film career as the French director Louis Malle would ...
See also:Brooke Shields, Brooke Shields - Career, Brooke Shields - Family, Brooke Shields - Postpartum depression, Brooke Shields - Filmography, Brooke Shields - TV work Read more here: » Brooke Shields: Encyclopedia II - Brooke Shields - Career |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Naval mine - Types Naval mines may be classified into two major groups.
Naval mine - Contact mines.
The earliest mines were usually of this type. They are still used today as they are extremely cheap compared to any other anti-ship weapon and still very effective both as a terror weapon and to sink enemy ships. Contact mines have to be very close to the enemy before they detonate, which limits the damage (read below ...
See also:Naval mine, Naval mine - Early History, Naval mine - Types, Naval mine - Contact mines, Naval mine - Unusual mine systems, Naval mine - Anti sweep mine, Naval mine - Rocket mine, Naval mine - Torpedo mine, Naval mine - Bouquet mine, Naval mine - Ascending mine, Naval mine - Mine laying, Naval mine - Damage, Naval mine - Direct damage, Naval mine - Bubble jet effect, Naval mine - The shaking effect, Naval mine - Countermeasures, Naval mine - Passive countermeasures, Naval mine - Active countermeasures, Naval mine - Strategy, Naval mine - Economy, Naval mine - Mines and the USA, Naval mine - US Mines Read more here: » Naval mine: Encyclopedia II - Naval mine - Types |
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| | | | | | Canadian Shield - Mining and economics: Encyclopedia II - Land mine - Mine warfare In military science, minefields are considered a defensive or harassing weapon, used to slow the enemy down, to help deny certain terrain to the enemy, to focus enemy movement into kill zones, or to reduce morale by randomly attacking matériel and personnel.
Since combat engineers with mine-clearing equipment can clear a path through a minefield relatively quickly, they are usually considered effective only if covered by fire.
The extents of minefields are often marked with warning signs and cloth tape, to prevent friendly tro ...
See also:Land mine, Land mine - History, Land mine - Charecteristics and Functioning, Land mine - Firing Mechanisms & Initiating Actions, Land mine - Anti-handling devices AHD, Land mine - Landmine varieties, Land mine - Anti-tank mines AT, Land mine - Anti-personnel mines AP, Land mine - Mine warfare, Land mine - Laying mines, Land mine - Detecting and removing landmines, Land mine - Efforts to ban anti-personnel mines, Land mine - Manufacturers Read more here: » Land mine: Encyclopedia II - Land mine - Mine warfare |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Mining - History The oldest known mine in the archaeological record is the "Lion Cave" in Swaziland. At this site, which has a radiocarbon age of 43,000 years, paleolithic humans mined for the iron-containing mineral hematite, which they ground to produce the red pigment ochre. Sites of a similar age where Neanderthals may have mined flint for weapons and tools have been found in Hungary.
Another early mining operation was the turquoise mine operated by the ancient Egyptians at Wady Maghareh on the Sinai Peninsula. Turquoise was also mined in pre-Colu ...
See also:Mining, Mining - History, Mining - Steps in the Mining Process, Mining - Mining techniques, Mining - Extractive metallurgy, Mining - Environmental effects, Mining - Mining industry, Mining - Mine Planning Software Read more here: » Mining: Encyclopedia II - Mining - History |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Mining - History The oldest known mine in the archaeological record is the "Lion Cave" in Swaziland. At this site, which has a radiocarbon age of 43,000 years, paleolithic humans mined for the iron-containing mineral hematite, which they ground to produce the red pigment ochre. Sites of a similar age where Neanderthals may have mined flint for weapons and tools have been found in Hungary.
Another early mining operation was the turquoise mine operated by the ancient Egyptians at Wady Maghareh on the Sinai Peninsula. Turquoise was also mined in pre-Colu ...
See also:Mining, Mining - History, Mining - Mining techniques, Mining - Extractive metallurgy, Mining - Environmental effects, Mining - Mining industry, Mining - Mine Planning Software Read more here: » Mining: Encyclopedia II - Mining - History |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Data mining - Definition Data mining has been defined as "The nontrivial extraction of implicit, previously unknown, and potentially useful information from data" 1 and "The science of extracting useful information from large data sets or databases" 2. Although it is usually used in relation to analysis of data, data mining, like artificial intelligence, is an umbrella term and is used with varied meaning in a wide range of contexts. It is usually associated with a business or oth ...
See also:Data mining, Data mining - Definition, Data mining - Data dredging, Data mining - Privacy concerns, Data mining - Combinatorial game data mining, Data mining - Notable Uses of Data Mining, Data mining - Software Read more here: » Data mining: Encyclopedia II - Data mining - Definition |
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| | | | | | Canadian Shield - Mining and economics: Encyclopedia II - Naval mine - Unusual mine systems There have been several specialized mines developed for other purpose and functions than the common minefield.
Naval mine - Anti sweep mine.
The anti sweep mine is a very small mine (40 kg warhead) with as small a floating device as possible. When the wire of a mine sweep hits the mine, it "sinks", letting the sweep wire drag along the anchoring wire of the mine until the sweep hits the mine. That detonates the mine and cuts the sweeping wire. They are very cheap and usually used in combination with other mines in a minefield to make sweeping harder. ...
See also:Naval mine, Naval mine - Early History, Naval mine - Types, Naval mine - Contact mines, Naval mine - Unusual mine systems, Naval mine - Anti sweep mine, Naval mine - Rocket mine, Naval mine - Torpedo mine, Naval mine - Bouquet mine, Naval mine - Ascending mine, Naval mine - Mine laying, Naval mine - Damage, Naval mine - Direct damage, Naval mine - Bubble jet effect, Naval mine - The shaking effect, Naval mine - Countermeasures, Naval mine - Passive countermeasures, Naval mine - Active countermeasures, Naval mine - Strategy, Naval mine - Economy, Naval mine - Mines and the USA, Naval mine - US Mines Read more here: » Naval mine: Encyclopedia II - Naval mine - Unusual mine systems |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Derbyshire lead mining history - Mine drainage Until the seventeenth century mining had usually been abandoned when the work reached the water table. Efforts at draining lead mines by horse-powered pumps, or “engines” had little success. In the later years of the industry mines were successfully drained by steam, internal combustion and electric power, but the first successes were achieved by soughs, drainage tunnels driven into flooded veins to allow the water to run off.By lowering the water table and opening u ...
See also:Derbyshire lead mining history, Derbyshire lead mining history - Background, Derbyshire lead mining history - Mining methods, Derbyshire lead mining history - Technical change, Derbyshire lead mining history - Mining customs, Derbyshire lead mining history - Mine ownership, Derbyshire lead mining history - The king's farmers and chief barmasters, Derbyshire lead mining history - Chief barmasters and the 24, Derbyshire lead mining history - Deputy barmasters, Derbyshire lead mining history - Giving a mine, Derbyshire lead mining history - Collecting the dues, Derbyshire lead mining history - Title-holding and record keeping, Derbyshire lead mining history - Accidents, Derbyshire lead mining history - Mine drainage, Derbyshire lead mining history - Smelting by cupola, Derbyshire lead mining history - The end of lead-mining in Derbyshire Read more here: » Derbyshire lead mining history: Encyclopedia II - Derbyshire lead mining history - Mine drainage |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Derbyshire lead mining history - Mining methods Lead had traditionally been found by following veins from surface outcroppings, particularly in rakes or vertical fissures. By the seventeenth century, however, most surface lead had been mined and prospecting was achieved by less direct methods. Miners searched for surface signs which were similar to known lead-rich areas, they checked ploughed and other disturbed land for traces of ore, they checked for signs in plants and trees and poorly performing crops, since lead is poisonous to most living things. They used probes to check for ...
See also:Derbyshire lead mining history, Derbyshire lead mining history - Background, Derbyshire lead mining history - Mining methods, Derbyshire lead mining history - Technical change, Derbyshire lead mining history - Mining customs, Derbyshire lead mining history - Mine ownership, Derbyshire lead mining history - The king's farmers and chief barmasters, Derbyshire lead mining history - Chief barmasters and the 24, Derbyshire lead mining history - Deputy barmasters, Derbyshire lead mining history - Giving a mine, Derbyshire lead mining history - Collecting the dues, Derbyshire lead mining history - Title-holding and record keeping, Derbyshire lead mining history - Accidents, Derbyshire lead mining history - Mine drainage, Derbyshire lead mining history - Smelting by cupola, Derbyshire lead mining history - The end of lead-mining in Derbyshire Read more here: » Derbyshire lead mining history: Encyclopedia II - Derbyshire lead mining history - Mining methods |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Open-pit mining - Typical Open Cut Grades Gold is generally extracted in open cut mines at 1 to 2 ppm (grams per tonne), but in certain cases, 0.75ppm gold is economic. This was achieved by bulk heap leaching at Alkane Minerals Ltd. Peak Hill mine in western New South Wales, near Dubbo.
Nickel, generally as laterite, is extracted via open cut down to 0.2%.
Copper is extracted at grades as low as 0.15% to 0.2%, generally in massive open cut mines in Chile, where the size of the re ...
See also:Open-pit mining, Open-pit mining - Extraction, Open-pit mining - Rehabilitation, Open-pit mining - Typical Open Cut Grades, Open-pit mining - Open-pit mines Read more here: » Open-pit mining: Encyclopedia II - Open-pit mining - Typical Open Cut Grades |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Naval mine - Damage The damage of a mine depends on the distance from the detonation, and is not always less because the detonation is some distance away.
Naval mine - Direct damage.
Usually only created by contact mines, direct damage is simply a hole blown in a part of the ship. Among the crew, shrapnel wounds are most common. This rarely sinks the ship, but might flood one or two compartments - usually in the bow.
N ...
See also:Naval mine, Naval mine - Early History, Naval mine - Types, Naval mine - Contact mines, Naval mine - Unusual mine systems, Naval mine - Anti sweep mine, Naval mine - Rocket mine, Naval mine - Torpedo mine, Naval mine - Bouquet mine, Naval mine - Ascending mine, Naval mine - Mine laying, Naval mine - Damage, Naval mine - Direct damage, Naval mine - Bubble jet effect, Naval mine - The shaking effect, Naval mine - Countermeasures, Naval mine - Passive countermeasures, Naval mine - Active countermeasures, Naval mine - Strategy, Naval mine - Economy, Naval mine - Mines and the USA, Naval mine - US Mines Read more here: » Naval mine: Encyclopedia II - Naval mine - Damage |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Shielded metal arc welding - Process variations Though SMAW is almost exclusively a manual arc welding process, one notable process variation exists, known as gravity welding or gravity arc welding. It serves as an automated version of the traditional shielded metal arc welding process, employing an electrode holder attached to an inclined bar along the length of the weld. Once started, the process continues until the electrode is spent, allowing the operator to manage multiple gravity welding systems. The electrodes employed (often E6027 or E7024) are coated heavily in flux, and are typi ...
See also:Shielded metal arc welding, Shielded metal arc welding - Development, Shielded metal arc welding - Operation, Shielded metal arc welding - Quality, Shielded metal arc welding - Safety, Shielded metal arc welding - Application, Shielded metal arc welding - Equipment, Shielded metal arc welding - Power supply, Shielded metal arc welding - Electrode, Shielded metal arc welding - Process variations, Shielded metal arc welding - Notes Read more here: » Shielded metal arc welding: Encyclopedia II - Shielded metal arc welding - Process variations |
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| | | | | Canadian Shield - Mining and economics: Encyclopedia II - Naval mine - Countermeasures Weapons are frequently a few steps ahead of countermeasures and mines are no exception. Currently, with modern mine hunting, countermeasures are beginning to catch up. However, the next generation of rocket mines may very well change that.
Naval mine - Passive countermeasures.
By building ships with as low signature as possible you can avoid detonating mines. This is especially true for minesweepers and mine hunters that have to work inside minefields. These ships are built out of glass fibre or even wood ...
See also:Naval mine, Naval mine - Early History, Naval mine - Types, Naval mine - Contact mines, Naval mine - Unusual mine systems, Naval mine - Anti sweep mine, Naval mine - Rocket mine, Naval mine - Torpedo mine, Naval mine - Bouquet mine, Naval mine - Ascending mine, Naval mine - Mine laying, Naval mine - Damage, Naval mine - Direct damage, Naval mine - Bubble jet effect, Naval mine - The shaking effect, Naval mine - Countermeasures, Naval mine - Passive countermeasures, Naval mine - Active countermeasures, Naval mine - Strategy, Naval mine - Economy, Naval mine - Mines and the USA, Naval mine - US Mines Read more here: » Naval mine: Encyclopedia II - Naval mine - Countermeasures |
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