He radioed to the outpost, in case Dewater had walked back.
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But Jason DeWater and Guy Mills are upset for the same reason.
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The two Nebraskans, Messrs DeWater and Mr Mills, give an idea of why this may be.
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A photograph of him seconds after Dewater was killed had appeared in The New York Times.
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Mr DeWater has to rely on manuals from iFixit, on self-made tools and on refurbished or copied parts.
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"Even we can no longer fix the home button of an iPhone," says Mr DeWater, a former musician who has turned his hobby of tinkering into a business based in Omaha, Nebraska.
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Work is currently ongoing to build a water filtration plant in order to dewater the mine.
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Fecal sludge from public toilets took longer to dewater than sludge from other sources, and had turbid supernatant after settling.
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Movement of solids across the screen surface is manipulated by flights. Liquids that have gone through screen are obtained and discharged through effluent outlet from the side of machine, while solids collected from the screen fall by gravity through the bottom discharge of the machine. Some of the available vertical screen scroll centrifuges are CMI model EBR and CMI model EBW which are manufactured by Centrifugal & Mechanical Industries (CMI). The former can dewater coarser particles size ranging from 1.5 in to 28 mesh whereas the latter can dewater finer particles size ranging from 1 mm to 150 mesh.
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Kean sublet the Great Extended lease to a Sydney company, Silver Horizons No Liability in 1964. They employed nine men to dewater the mine and clean out the stopes before mining but poor assay results discouraged further work and they withdrew. The mine has been abandoned since, although most of the machinery remains on site.
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This self-correcting performance prevents wet material from purging at the cake discharge. It is achieved without varying the speed of the screw. The economic advantages of these characteristics led to interrupted screw presses being used to dewater fibrous materials that are neither slippery nor slimy. Examples would be alfalfa, corn husk, and, more recently, paper mill fibers.
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Machinery from overseas was ordered in 1935 for the mine. Renovations to the battery were proposed so as to treat 60 tons of ore per day and also to dewater the mine. The Queensland Gold Development Syndicate Limited reconditioned the mine, erected a new headframe and a 10 head battery, classifying and flotation machinery were installed.
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Since then, there have been great enhancements in fabric quality and manufacturing technology that have made this issue obsolete. Unlike the US, automatic membrane filter technology is the most common method to dewater municipal waste biosolids in Asia. Moisture is typically 10-15% lower and less polymer is required—which saves on trucking and overall disposal cost.
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Unfortunately floods were common as water seeped into the pits. In 1835, one such flood occurred at Ladyshore. Mining in the affected pit ceased in 1884, but the shaft remained in use as the upcast ventilation shaft for the colliery. Eventually a tunnel was driven to Farnworth Bridge Pit, also owned by the Fletcher family, to dewater and ventilate the mines.
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When the oceanic plate breaks apart from the crust and sinks into the mantle, underplating continues to occur. At the same time, the sinking oceanic plate starts to dewater and release the fluids upward to aid the partial melting of mantle and the crust above. It results in extensive magmatism and bimodal volcanism. Final stage: Continued sinking of the oceanic crust.
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John Heathcote closed the pit in 1750. Heathcote and Fletcher were at a loss as how to dewater the pit until it came to the attention of Heathcote's relation, James Brindley. He was a canal engineer whose feats included the Bridgewater and Trent and Mersey Canals. He suggested using a Newcomen atmospheric pumping engine but the engine had been plagued with problems.
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Schematic of a belt filter press to dewater sewage sludge. Filtrate is extracted initially by gravity, then by squeezing the cloth through rollers. Water content of sludge may be reduced by centrifugation, filtration, and/or evaporation to reduce transportation costs of disposal, or to improve suitability for composting. Centrifugation may be a preliminary step to reduce sludge volume for subsequent filtration or evaporation.
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An old beam engine to dewater a lead mine at nearby Wanlockhead Leadhillite is a lead sulfate carbonate hydroxide mineral, often associated with anglesite. It has the formula Pb4SO4(CO3)2(OH)2. Leadhillite crystallises in the monoclinic system, but develops pseudo-hexagonal forms due to crystal twinning. It forms transparent to translucent variably coloured crystals with an adamantine lustre.
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The retained sediment approach is the final commonly used approach and involves leaving the sediment behind where it is. To do this, the river or creek must be rerouted around the damsite which can prove expensive and challenging. This may be carried out in places where the dig and dewater approach makes sense, but are too remote to be cost-effective.
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Around 30 nations collectively operate more than 1,400 brown coal-fired power stations around the world. Brown coal power stations that cannot economically dewater brown coal are inefficient and cause of high levels of carbon emissions. High emitting power stations, notably the Hazelwood power station in Australia, attract environmental criticism. Many modern economies including Greece and Victoria (Australia) are highly dependent on brown coal for electricity.
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Mr. Thompson introduced the Vacuum Well and Filtervac pipe to the industry. Though he did not formally patent these designs, he created them and used them in innovative ways. These types of underdrain pipes were able to draw vacuum without collapsing, which enabled them to attach to a pump to dewater a construction site. His development of the first self-priming rotary pump revolutionized wellpoint dewatering methods.
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Environmental considerations are making such "once-through" systems increasingly rare. These simple, but highly reliable pumps have a variety of industrial applications. They are used to maintain condenser vacuum on large steam-turbine generator sets by removing incondensable gasses, where vacuum levels are typically 30–50 mbar. They are used on paper machines to dewater the pulp slurry and to extract water from press felts.
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The Assistant Secretary for Aviation and International Affairs is appointed by the President and confirmed by the United States Senate. The Assistant Secretary is paid at level IV of the Executive Schedule, meaning he or she receives a basic annual salary of $143,000. The incumbent Assistant Secretary is Joel Szabat , who was confirmed on January 2, 2019. Previous Assistant Secretaries include Karan Bhatia, Read C. Van DeWater, and Francisco Sanchez.
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Two small shafts were sunk close to the boundary of Coolartragh and Tonagh townlands. And some minor production ensued between 1859-61 when the vein showed a band of galena underlying to the east within a zone of brecciated slates above a footwall of Tertiary basalt. A landowner (Michael Hughes) proposed to dewater the shafts in Tonagh in 1953 but nothing came of this. No production is detailed.
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World Fishing & Aquaculture, 11 Jun 2015. pclarification of drinks, in the mining and processing industry, and in the processing of biofuels. Flottweg also produces separators (disc stack centrifuges), which are used in the food and beverage, chemical, pharmaceutical and petroleum industries. The company also makes belt presses, used to produce fruit and vegetable juices, dewater spent grains, create algae and herbal extracts, and processing of coffee grounds and industrial sludge.
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He also described deep mining underground, and mentions the need to dewater the workings using reverse overshot water- wheels, and actual examples have been found in many Roman mines exposed during later mining attempts. The copper mines at Rio Tinto were one source of such artifacts, where a set of 16 was found in the 1920s. They also used Archimedean screws to remove water in a similar way.
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The reason behind this trade-off is that in losing fine solids to centrate, the cake with bigger particles is able to dewater more effectively which results in a drier cake. Optimal pool for a particular application should be identified through the conduction of tests. Another important heuristic is the differential speed, which controls cake transport. A high differential speed would give rise to a high solids throughput.
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Solid-bowl centrifuge is used for dewatering the coal waste slurry along with plate-and-frame filter press in coal manufacturing to dewater the slurry before being disposed of. The slurry feed was attained from the underflow of a functioning bituminous coal-cleaning thickener device. As for the waste stream, it is usually disposed of into slurry cells or deserted underground mine site if available, or more commonly in slurry impoundments.
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Testing for the particular sludge type must be conducted to determine the optimum cake thickness. In some cases where filtrate recovery is important, it may be necessary to introduce a cake washing step. The primary objective of a belt press filter is to dewater process sludge and much of this dewatering occurs in the gravity drainage zone. The gravity drainage zone can achieve a 5 to 10 percent increase in solids concentration.
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However attempts to dewater the mine were unsuccessful so he pumped out the nearby King's mine. In 1952, Thomas Heywood Connah, a government geologist, recommended further investigation of the front portion of the lode and Kean renewed equipment and continued mining. With the market depressed in 1953, Kean decided to abandon both mines. Kean's enterprise had produced 3,034 ozs of silver, 20 tons of lead and less than 100 tons of zinc concentrates.
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By the 1940s large parts of the British canal network had begun to be abandoned as freight moved on to road transport. The northern part of the Lancaster Canal was no exception, with certain sections being filled in and other parts allowed to drain (dewater). While the canal between Preston and Tewitfield remained classed as a "cruising waterway", the Northern Reaches was deemed to be "remainder waterway" (i.e. obsolete) following a 1955 Act of Parliament.
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Most of its major tributaries are dammed, including the Kent, Alpine, Bon Tempe, Lagunitas, and Nicasio reservoirs. The San Geronimo Valley is the last un-dammed headwater tributary of Lagunitas Creek. Each of the reservoirs in the watershed has a dam and the biggest problem in the watershed is their blocking of the streams, which prevents fish migration. The dams dewater the streambed, especially as the first winter rains fill the reservoirs instead of flowing downstream.
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William "Bill" Thomas Piper Jr. (8 September 1911 – 24 August 2007) was an American businessman and president of Piper Aircraft from 1968 to 1973. He oversaw the company after his father's death and the company's sale. Piper Jr. was born in 1911 to William T. Piper and Marie Theresa Piper (née Van DeWater). As a young boy Piper Jr. was very interested in business; he created his own shoe-cleaning service in Lock Haven when he was just 7.
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The dig and dewater approach is typically the most expensive dam removal method, but is necessary in some cases. It entails emptying the entire reservoir, allowing the sediment to dry, and then transporting it to a safe location for disposal. It is costly and slow, but if the reservoir is located very near hydroelectric generating facilities that would be greatly impacted by released sediments, it may be necessary. Another situation is if the sediments behind the dam contain toxins.
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The hulk was not stable enough to place pumps on board to dewater it. Conception was then towed by Retriever II back to shallower waters to aid in its recovery, but the boat sank stern-first about four hours after the fire broke out at 6:54 a.m., coming to rest upside-down at a depth of approximately from the north shore of Santa Cruz Island. The first victim was pulled from the water at 8:04 a.m.
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Moreover, Roman engineers used sequences of reverse overshot water-wheels to dewater mines, and the deep workings at Dolaucothi produced a fragment of such a wheel during the 1930s when deep mining operations were resumed. Sequences of such wheels increased the lift, and one extensive sequence of 16 wheels was found in old Roman mine workings on the Rio Tinto river in the 1920s. The wheels were arranged in pairs and could lift water about from the bottom of the mine there.
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Drainage wheel from Rio Tinto mines Rio Tinto Vitruvius described the construction of the Archimedes' screw in Chapter 10, although did not mention Archimedes by name. It was a device widely used for raising water to irrigate fields and dewater mines. Other lifting machines mentioned in include the endless chain of buckets and the reverse overshot water-wheel. Remains of the water wheels used for lifting water have been discovered in old mines such as those at Rio Tinto in Spain and Dolaucothi in west Wales.
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The first tin rush to Kinta lasted from 1884 to 1889 where new land was taken up by Chinese miners using labour-intensive methods. Hailing from the farmlands of Guangdong, the Chinese mining workers at first used agricultural implements such as hoes, rakes and baskets to excavate the earth. The Chinese also introduced the water wheel to dewater the mines. The second tin rush lasted from 1889 to 1895, and was characterised by small gangs of tributers using the wooden sluice box (lanchut kechil).
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Heathcote and Fletcher were at a loss as how to remove the water from the pit until it came to the attention of James Brindley. Brindley, a relative of John Heathcote, was an engineer whose feats included the Bridgewater Canal, the Trent and Mersey Canal and later the Chester Canal, as well as the Harecastle Tunnel. He initially suggested a scheme whereby a Newcomen atmospheric pumping engine could be used to dewater the mine but the Newcomen engine had been plagued with problems in dewatering deep mines.
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It could not pump water higher than above water level. The atmospheric engine, invented by Thomas Newcomen in 1712, combined the ideas of Thomas Savery, who he was forced to go into partnership with due to Savery's patent, and Denis Papin, using his invention of a piston. It was the first practical application of the steam engine in a mine and was used to dewater coal and tin mines. The first reliable metal pump was developed by József Károly Hell and used in Schemnitz in 1749.
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William S. Hunsel, a consultant to Outcalt, Guenther & Van Buren, advised Hunkin-Conkey to dewater in sections, laying the foundation in sections. But the company refused, as this would be much more expensive. Implementing a new drainage system was the only solution, company officials said, and it would take four more months to finish the foundation. Hunkin-Conkey's reply was unacceptable to the city, so on January 11 Cleveland Properties Director Harold Lausche sent the bonding firm, Federal Insurance Co., noticed of failure to perform.
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A head of water provided at the shaft to drive the machine. He believed that with such a pressure, he should be able to operate a hydraulic injector to dewater the quarry, but none were on the market, and manufacturers in Britain and America were convinced that such an idea would not work without a supply of steam. He persisted, and found a continental manufacturer who was prepared to build a prototype. Once installed, it successfully raised water from the bottom of the shaft, and with no moving parts, did not need regular maintenance.
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Major employers are Pool Industrial Estate, and the Pool Innovation Centre which opened in 2010 as part of regeneration work to stimulate economic growth and development in the heartlands of Cornwall. South Crofty Tin Mine is currently owned by Canadian mining company Strongbow Exploration Inc after buying the site from Western United Mines. . Strongbow are currently in the process of constructing a water treatment plant to dewater the mine ahead of conducting a feasibility study with the aim of bringing full scale mining back to Cornwall through the introduction of modern mining methods.
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The Browns retained a half share in this new operation and the Minmi operations were transferred to the new company in February 1863. However this new company was short lived as in June 1864 the mine workings at Minmi were flooded. It took until mid August to dewater the mine workings, by this stage the new company was in serious financial trouble. In December 1864 the new company was wound up and ownership of the Minmi workings was returned to the Browns once they paid the £17,500 in debts that the company owed.
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Valerius Anderson invented the interrupted screw design and patented it in the year 1900.Twin screw press with interrupted flights - US Patent 6550376 Description Anderson observed that in the continuous flighting arrangement of a compression screw, there are tendencies for slippery materials either to co- rotate with the screw or to pass through with minimal dewatering. He wrote that "brewers' slops, slaughterhouse refuse" and other "soft and mushy" materials dewater poorly in continuous screw presses. His invention consisted of putting interruptions in the flighting of a compression screw.
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Roman screw used to dewater mines in Spain Another device which was used widely was the Archimedean screw, and examples of such drainage machines have also been found in many old mines. Depictions show the screws being powered by a human treading on the outer casing to turn the entire apparatus as one piece. They were also used in series, so increasing the lift of water from the workings. However, they must have been more difficult to operate since the user had to stand on a slanting surface to turn the screw.
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The mine uses trolley-assist trucks to reduce fuel and maintenance costs and increase productivity. The major fleet of 20 x Komatsu Haulpack 730E's utilize the trolley assist feature as well as a subsidiary fleet of Hitachi EH4500 and EH3500 trucks. The trolley assist trucks are powered by DC electricity from overhead catenary lines at 1200V. The Grootegeluk plant uses horizontal belt vacuum filtration to dewater fines. The mine has the world’s largest coal beneficiation facility, with six plants that upgrade 8,000 tonnes per hour of run-of-mine coal.
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Susannite crystallizes in the trigonal system. It is quite soft with a Mohs hardness of 2.5 to 3.0 and a relatively high specific gravity of 6.57. An old beam engine to dewater a lead mine at nearby Wanlockhead It was discovered in 1827 in the Susannah Mine, Leadhills in the county of Lanark, Scotland. In addition to the type locality in Scotland, it has also been reported from various locations in Germany, the Tiger Mine in Pinal County, Arizona, from Iporanga, Sao Paulo, Brazil, and the Tsumeb mine of Namibia.
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Although the workers at the mine did their best to pump the water, they could not stop the water flowing into the mine at a speed of 480㎥/hour. In 1996, during the North's 'Arduous March', electricity was not provided to the mine, leading to flooding in the mineshafts in January 1997. Hyesan Mine flooded again, as did other mines throughout the country, and lost all mining facilities. Since 1998, Kim Jong Il budgeted 8.2 million USD to dewater the mine, and the mine was recovered using electricity and equipment provided by China.
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Ultrasonic foil installed under the wire on a paper machine An Ultrasonic foil is part of the drainage table section of paper machines. A series of hydrofoil blades (called foils) create pressure/vacuum pulses that dewater the fibre/water slurry (called stock) on a moving conveyor belt (the wire). Flexible ceramic foils have been used for years, but ultrasonic foils produce paper of higher quality. High-power ultrasonics create millions of pressure pulses from imploding cavitation bubbles which keep the fibres apart, giving them a more uniform distribution.
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Because most of the energy was needed to drain the mines of water and because the need for that continued to grow as mines became deeper, there were attempts early on, to dewater mines using drainage adits (Wasserlösungsstollen). This entailed driving tunnels from the mines to the valleys, through which water could drain away under gravity. The deeper the level of drainage, the longer the adit had to be. The longest of these tunnels is the Ernst August Adit, built in the mid-19th century, which is 35 kilometres long.
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Filter presses are commonly used to dewater high-solids slurries in metal processing plants, one of the press filter technology that could deliver the job is the Rotary Pressure Filter method, which provides continuous production in a single unit, where filtration is directed via pressure. However, in cases where solids concentration in high-solids slurries is too high (50%+), it is better to handle these slurries using vacuum filtration, such as a continuous Indexing Vacuum Belt Filter, since high concentration of solids in slurries will increase pressure and if pressure is too high, the equipment might be damaged and/or less efficient operation.
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The "Cornish Pumphouse" was originally built in a different location next to the Martha Mine in 1904 to accommodate a large Cornish steam engine designed to pump water out of the mine. The building's design originated from one used in tin mines in Cornwall, England. The horizontal Cornish pump was used up to 1913 to raise water from a depth of around via the adjacent No 5 shaft at a rate of over 400,000 litres per hour. After 1913, electric pumps were used to dewater the mine, but the pumphose was kept in working order until 1929 as a backup.
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Kelley, p 5–450Larzelere, p 80 Duty consisted of boarding Vietnamese junks to search for contraband weapons and ammunition and check the identification papers of persons on board. On 20 June 1966 Point League along with Point Hudson and Point Slocum assisted with the capture of a North Vietnamese trawler loaded with ammunition near the mouth of the Cổ Chiên River.Larzelere, p 70Johnson, p 334 During the month of September 1966 Point League responded to a distress call from the SS Dragonfly by helping dewater a flooded compartment and putting one of the cutter's engineers on the merchant ship temporarily to replace the injured chief engineer.
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The upper section of the river, defined as the stretch from Lake McClure to the headwaters, has 11 species of fish. Historically, the range of anadromous fish extended to the waterfalls at the head of Yosemite Valley, but dams have blocked their migration since the early 1900s, and diversions frequently dewater their remaining spawning habitat in the lower part of the river. Environmental measures enacted in the late 20th century have had some success in boosting chinook salmon populations, from a record low of 500 fish during several years in the 1950s, to a high of 30,000 in 1984. Since the 1970s, the annual chinook run has averaged about 5,300.
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Beijing aims to develop Xinjiang into China's new energy base for the long run, supplying one-fifth of the country's total oil supply by 2010, with an annual output of 35 million tonnes. On June 10, 2010 Baker Hughes announced an agreement to work with PetroChina Tarim Oilfield Co. to supply oilfield services, including both directional and vertical drilling systems, formation evaluation services, completion systems and artificial lift technology for wells drilled into foothills formations greater than deep with pressures greater than 20,000 psi (1379 bar) and bottomhole temperatures of approximately . Electrical submersible pumping (ESP) systems will be employed to dewater gas and condensate wells. PetroChina will fund any joint development.
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The "Cornish Pumphouse" was originally built in a different location next to the Martha Mine in 1904 to accommodate a large Cornish steam engine designed to pump water out of the mine. The building's design originated from one used in tin mines in Cornwall, England. The horizontal Cornish pump was used up to 1913 to raise water from a depth of around 400 metres (1,300 ft) via the adjacent No 5 shaft at a rate of over 400,000 litres per hour. After 1913, electric pumps were used to dewater the mine, but the pumphose was kept in working order until 1929 as a backup.
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It now plans to commence mining at Gidgee once more in March 2010, while production from Youanmi is not planned any more at this time. In late December 2009, APEX announced a further delay with the development of the Gidgee mine because of the need of an upgrade of the Gidgee - Wiluna road. APEX anticipates that mining could be delayed another two or three month.Wiluna Update APEX ASX announcement, published: 22 December 2009, accessed: 21 January 2010 The company has no immediate plans with Youanmi at the time and has not stated whether it is still continuing to dewater the operation, making a reopening in the near future unlikely.
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Two Tern crewmembers went aboard to assist and were able to completely dewater the vessel. Two Sons was escorted to Pier 45 (San Francisco) and no injuries were reported. On September 4, 2017,Tern's small boat crew rescued two women whose sailboat capsized near Richmond. 250px On May 15, 2019, Commandant of the Coast Guard, Admiral Karl L. Schultz, Federal Emergency Management Agency (FEMA) Region 9 administrator, Mr. Robert J. Fenton, California Office of Emergency Services director, Mr. Mark Ghilarducci, and representatives from local partner agencies met to discuss shared concerns and issues facing the complex maritime environment in and around the Bay Area while touring the Port of San Francisco aboard Tern.
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A short distance below the dam the Middle Fork is joined by its second largest tributary, the North Fork Middle Fork American River, which drains an extensive area along the Forest Hill Divide, though lower in elevation than the upper Middle Fork or Rubicon Rivers. The North Fork Middle Fork is free- flowing with no significant dams or diversions. Just downstream, the Middle Fork flows through Tunnel Chute, where the river races through a man-made tunnel blasted out during the California Gold Rush, in order to dewater part of the river bed for mining. The Middle Fork delineates the Placer County (north)–El Dorado County line from Oxbow Dam all the way until its confluence with the North Fork.
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Triana worked as an engineer for the train line of Puerto Wilches, finished in 1883, the central northern highway and train tracks in Cúcuta and on irrigation projects in the Valley of Sogamoso as part of a study to dewater Lake Tota. From 1890 Triana was director of public works in Nariño and from 1917 manager of the Municipal Tramway of Bogotá. Miguel Triana was professor in physics, hydraulics, geometry, trigonometry and drawing at the faculty of Engineering of the Universidad Nacional in Bogotá. He was affiliated with various organisations in Colombia, among others: Sociedad Físico-Literaria de Bogotá, El Ateneo, Sociedad de Ingenieros Civiles de los Estados Unidos, Sociedad Colombiana de Ciencias Naturales and the Sociedad Colombiana de Ingenieros, founded by Triana in 1887.
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It will take still longer for the sediment to accumulate to the point where it could clog the outlet works, which are the lowest openings in the upstream face of the dam. Some critics predict that if the water level then drops, it may fall below the penstock openings, which are higher up on the dam face, which will cause the release capacity of the dam to drop to zero. This would dewater the Colorado River bed below the dam which would remain dry until the next major spring inflow. Only springs, seeps and tributaries such as the Paria, Little Colorado and Virgin River would supply the river flow during these times, perhaps causing unprecedented drops in levels of Lake Mead as well.
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Suncor invested $1.2 billion in their Tailings Reduction Operations (TROTM) method that treats mature fine tails (MFT) from tailings ponds with chemical flocculant, an anionic Polyacrylamide, commonly used in water treatment plants to improve removal of total organic content (TOC), to speed their drying into more easily reclaimable matter. Mature tailings dredged from a pond bottom in suspension were mixed with a polymer flocculant and spread over a "beach" with a shallow grade where the tailings would dewater and dry under ambient conditions. The dried MFT can then be reclaimed in situ or moved to another location for final reclamation. Suncor hoped this would reduce the time for water reclamation from tailings to weeks rather than years, with the recovered water being recycled into the oil sands plant.
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The Kingston Fossil Plant coal fly ash slurry spill was an environmental and industrial disaster that occurred on Monday December 22, 2008, when a dike ruptured at a coal ash pond at the Tennessee Valley Authority's Kingston Fossil Plant in Roane County, Tennessee, releasing of coal fly ash slurry. The coal-fired power plant, located across the Clinch River from the city of Kingston, used a series of ponds to store and dewater the fly ash, a byproduct of coal combustion. The spill released a slurry of fly ash and water, which traveled across the Emory River and its Swan Pond embayment, onto the opposite shore, covering up to of the surrounding land. The spill damaged multiple homes and flowed into nearby waterways including the Emory River and Clinch River, both tributaries of the Tennessee River.
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Mature tailings dredged from a pond bottom in suspension were mixed with a polymer flocculant and spread over a "beach" with a shallow grade where the tailings would dewater and dry under ambient conditions. The dried MFT can then be reclaimed in place or moved to another location for final reclamation. Suncor hoped this would reduce the time for water reclamation from tailings to weeks rather than years, with the recovered water being recycled into the oil sands plant. Suncor claimed the mature fines tailings process would reduce the number of tailing ponds and shorten the time to reclaim a tailing pond from 40 years at present to 7–10 years, with land rehabilitation continuously following 7 to 10 years behind the mining operations. For the reporting periods from 2010 to 2012, Suncor had a lower- than-expected fines capture performance from this technology.
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Apex expands WA gold consolidation with Wiluna acquisition APEX ASX announcement, published: 20 June 2007, accessed: 22 January 2010 APEX announced first successful drilling results from Youanmi in December 2007 and anticipated that mining at Youanmi would commence in 2009. In January 2008, APEX begun to dewater the open pit at Youanmi in order to gain access to the submerged underground portal, the pit being filled with 1.8 million cubic meters of water. It anticipated that the pit would be dewatered by the end of 2008, underground dewatering would start in early 2009 and ore production in the third quarter of 2009.Apex commits to project development at Wiluna and Wilsons APEX ASX announcement, published: 23 June 2008, accessed: 21 January 2010 The company revised this plan, however and decided to only proceed with the development of the Wiluna mine, deferring mining at Youanmi to 2010.
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