WEBPerformance. The mining dragline HS 8300 has been designed to meet the tough conditions in mining environments. The machine delivers power and performance with low cost per ton and high turnover rates. The interlock control system allows for power regeneration in dragline operation, reducing fuel consumption as well as wear and tear .
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WEBOct 17, 2014 · CQMS Razer's Hurricane dragline bucket represents the very latest in bucket design and technology. Available for machines from the M8050/BE1370 size to the larger M8750 machines, the Hurricane is a mediumweight, fastfilling production bucket.
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WEBSep 14, 2012 · The huge machine capped a dragline and shovel race that began in the 1950s as various surface producers ordered ever larger equipment capable of achieving successively greater efficiencies of scale." ... The cartoonish massive stripping machine depicted dwarfing a coal train on the April 1960 cover of the magazine heralded the .
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WEBHer name is Big Muskie and she is the biggest machine that has ever walked on the face of the earth. The Big Muskie is a giant electricpowered BucyrusErie dragline owned by the Central Ohio Coal Company, a division of American Electric Power. Taking three years to build, she started her career in 1969 removing overburden from coal formations.
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WEBSep 19, 1998 · Draglines are machines that have a very large bucket hanging by a cable from a long boom attached to the front of the machine, as shown in the introductory figure of this section. The bucket is cast a considerable distance from the dragline by swinging and dropping the bucket in one motion. ... The dragline operations leave behind .
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WEBAt this time, the machine was considered the largest walking dragline in the world. Then the Marion 8900 was built. (3.)The BE1260 Walking Dragline, manufactured by the BucyrusEire Company, first manufactured in the early 1960s was a relatively small dragline, but a very popular one.
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WEBSep 8, 2020 · Pull over along many roads to watch draglines mining coal. Over the years, many methods have been used to mine the coal of this area. ... Draglines eventually became the common machine to stop the overburden. Over the years, they have increased in size to the point where the giant bucket will hold a huge truck. These large buckets .
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WEBJun 19, 2015 · North American Coal Corp. has reportedly stopped production at the Falkirk mine near Underwood, North Dakota, after the mine's dragline, Old Ironsides, slid onto its side in a ground slip this week. NA Coal Government and Public Affairs Director David Straley told the Bismarck Tribune that the operator of the 13millionlb machine .
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WEBThe history of dragline excavators dates back to the early twentieth century when they were first used for coal mining in the United States. Over the years, they have evolved significantly in terms of their design and capacity. ... Wire rope draglines are the most commonly used type of dragline excavator. These machines use a wire rope system ...
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WEBApr 8, 2017 · Kim Fundingsland/MDN The massive dragline that removes earth above veins of lignite coal at the Falkirk Mine near Underwood operates 24 hours a day, seven days a week. It began operation in 1980.
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WEBBig Muskie could move 39 million pounds of earth and rock every hour, revealing rich coal seams 100150 feet down in southeastern Ohio. Big Muskie could swing its boom 600 feet, creeping across the landscape on four giant shoes. The immense dragline machine was churning along at full production until 1991, when power demands and other factors ...
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WEBMar 14, 2023 · Overburden removal is a major activity of surface coal mining and accounts for over 60–70% of the costs. Cast blasting is integral to overburden removal using draglines.
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WEBJun 3, 2010 · As that coal is removed, the dragline will make another pass along that spoil bench and remove the interburden. ... The HMC EasiMiner looks like a modified highway milling machine but operates as a continuous surface miner. A massive 7ft, 4in. diameter cutting head sizes coal so effectively that the need for a primary crusher is eliminated ...
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WEBWhat is a dragline? The dragline, or dragline excavator, is a mechanized excavator and crawler that is used in largescale works. It operates with a shovel or scoop attached to the machine only with cables, which offers it a wide range of action and load. However, it reduces power, so the dragline is ideal for excavating and hauling materials ...
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WEBMar 13, 2012 · This is called a dump operation. It is a independent machine unlike a shovel. A 30 cum Dragline can handle 40 Lakh cum of OB per annum. The dragline works on the immediate OB bench above coal and the benches from the surface to the Dragline are normally handled by Shovel Dumper combination.
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WEBJan 29, 2017 · Big Brutus is the world's largest electric shovel. It stands 16 stories high amid the fields of rural southeast Kansas. The coal strip mine it helped clear of rock and dirt has long been shut down ...
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WEBThe electrically operated dragline stands 286 feet high and required 214 trucks to deliver it in pieces from Mississippi to the mine outside of Center. CENTER A coal mining company in Center ...
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WEBJun 17, 2015 · A 13million pound excavating machine, called a dragline, at a coal mine near Underwood, is leaning but stable after the ground it was sitting on began giving way Tuesday.
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WEBPH draglines are built for costeffective productivity and reliability. The PH 9020C dragline offers a bucket capacity of 75 117 yd3 and a boom length of 300 405 feet. PH draglines are built for costeffective productivity and reliability. ... ** Shoe ground pressure assumes 90% of machine weight is on shoes. Tub diameter: ft ...
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WEBThe Big Muskie, a Model 4250W, was constructed by the BucyrusErie Company in 196669 for Central Ohio Coal after two years of design work. The company chose the dragline excavator over a traditional shovel because it could strip 8,000 yards of overburden per hour to allow for the uncovering of highsulfur brown Ohio coal 185feet below ground.
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WEBFeb 24, 2021 · The massive machine was retired in 1991, after yearly increases in electricity costs and growing opposition to strip mining operations in Ohio. The recordbreaking dragline became unprofitable to ...
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WEB1. Standard Lift Crane. Dragline excavator uses that operate as a standard lifting crane are built offsite and transported to the mine. They are able to be dismantled and reassembled. Within civil engineering, standard lift cranes with winch drums can be used to build bridges, ports, and roads. 2.
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WEBJan 14, 2023 · The study may provide a reference for future work related to the dragline machine's reliability design and maintenance. Draglines are extensively used in Indian mines. ... failure data of a dragline were collected from an Indian surface coal mine. 2 Analysis Approaches. The proposed methodology for reliability analysis of a dragline .
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