Draglines 101: How They Do It
Utilized in a similar fashion as cranes, draglines are used primarily for open-pit operations to dismantle and transport materials. In strip mining operations, draglines are used to remove overburden from …
dragline electrician at a coal mine
Dragline Excavators and Mining
These huge dragline excavators are meant to stay in place – and in service – for decades. Onsite dragline excavators are typically used in coal and oil sands strip mining. They are also used for dredging …
The rise and fall of the two biggest draglines ever built
The Captain was the first of the big draglines, built by Marion Power Shovel for the Captain Mine in Illinois. It was then rivalled by the Big Muskie, owned by the Central Ohio Coal Company. News
Moving Mr. Tom: one of the largest coal mine draglines in …
Having sat unused since 1995, Mr. Tom, one of the biggest coal mine draglines in the country, had turned into a rusting hulk, seen only occasionally by a handful of dirt bike and motorcycle ...
Economical Operation & Estimation of Operating Cost of Draglines …
Each dragline that is considered for an AC Electrical upgrade will be fully analyzed to determine the machines maximum potential productivity increases. ... The present paper investigates a few important productivity parameters of draglines operating in some major opencast coal-mines in India. The parameters, such as, average total cycle time ...
How an Electric Shovel Made Coal Mining Easier in Kansas
Dubbed Big Brutus by a Pittsburg and Midway Coal Mining Company Mine 19 superintendent in 1963, the machine was actually named Bucyrus Erie Company Coal Shovel Model 1850-B, and it cost a whopping $6.5 million to manufacture. Designed to stay in service for 25 years, the purpose of the shovel was simple.
MSHA HANDBOOK SERIES
background in mine electrical systems and equipment. Examples include electrical engineers, electrical inspectors, and others who have the education and experience ... maintenance of electrical equipment and circuits in coal mines are listed in 30 CFR 75.512, 75.800, 75.821, 75.832, 75.900, 77.502, 77.800, and 77.900. Requirements for
Coal-Mining Electricians—History & Safety | 360e
Electrical inspectors need five years of experience. Certification tests cover topics such as electrical theories, circuits, equipment, mine laws and national electrical codes. History of U.S. …
Bayesian Network Approach for Dragline Reliability Analysis: …
Draglines are extensively used in Indian mines. A dragline has more than hundreds of components, and it is complex in design. This study involves the evaluation of the reliability of a draglines system using a Bayesian network (BN) model mapped from a fault tree. Based on the BN inference, the reliability estimation, the diagnosis, and the …
North Dakota lignite then and now
The massive power plants we see on the North Dakota landscape today were erected in close proximity to mines situated on vast coal reserves. Huge draglines are just some of the rapid...
Mining Dragline HS 8300
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 of the free-fall winch.
Draglines | |
A dragline is a life-of-mine asset. To ensure that your investment provides the highest level of performance, productivity, and financial return over time, offers a stable of top-quality, globally-available aftermarket solutions, including mechanical and electrical upgrades, structural upgrades, relocation and assembly ...
SCIENCE OF MINING MACHINES Recent Advancements …
Coal India Limited, India Received March 24, 2016 ... from century old techniques employed for power transmission, control and operation to the recent trends. Dragline is mostly used in mining sector for removal of overburden as it is highly economical in comparison to the usage of ... Single line diagram of dragline electrical system. Fig. 6 ...
Coal mining
Coal mining - Underground, Surface, & Drilling: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in …
Kentucky Coal Heritage
Kentucky Coal Heritage Mining Equipment - Draglines : Draglines. The first dragline ever produced was equipped with a two-line bucket system, John W. Page of the Chicago based firm of Page & Shnabel is credited with building it in 1903. Homestead Mine. The first of the Marion 8800 series of draglines and the first to break the 100 cu-yd barrier
P&H 9020C walking dragline
The P&H 9020C dragline offers a bucket capacity of 75 - 117 yd3 and a boom length of 300 - 405 feet. P&H draglines are built for cost-effective productivity and reliability.
Largest Dragline in the World | Biggest Dragline Ever Built
The area is a reclaimed strip mine that is now home to diverse flora and fauna. Modern Draglines. Giant draglines have long since been made obsolete, but dragline excavators are still very much in use. The largest available dragline on the market today is Joy Global's P&H 9020XPC. The bucket has a capacity of (110yd³ to 160yd³.)
Visiting Dragline World
Dragline World is located in the small coal mining village of Listie Pa. Listie is about 3.5 miles northeast of Somerset Pa. Somerset is right off of the Pennsylvania Turnpike at exit 10. There are lots of motels and restaurants located here as is Seven Springs Ski Resort, just a few miles from Somerset.
Moving Mr. Tom: one of the largest coal mine …
Sporting flags representing the United States, Alabama, and Vietnam POW-MIAs, Mr. Tom is a walking dragline with two sled-like feet that move it forward about 13 feet at a time.
Section 1: Coal Miners | 8th Grade North Dakota …
Image 1: A dragline uses a gigantic bucket to strip coal from the coal vein in this strip mine. The dragline operator replaces dozens of miners through the use of a single, huge piece of equipment. The draglines can be …
Coal Zoom | Dragline at North Dakota Mine Stuck in a Pit
Dragline at North Dakota Mine Stuck in a Pit . December 28, 2023 - A dragline used to dig at the Coyote Creek Mine near Beulah, ND got stuck in a pit Tuesday afternoon.. The incident was caused by the working area below the dragline becoming unstable, according to David Straley, vice president of external affairs for North …
Digging big
The dragline is AC-powered and has been operational at TransAlta's Highvale coal mine in Alberta, Canada, since 2010. The 8750 has an operating radius of 117.8m, and up to 61.5m dumping height and 79.8m digging depth, offering a suspended load capacity of 344,736kg.
Kaleidoscope: Biggest dragline went to work 50 years ago in …
The Central Ohio Coal Co., a subsidiary of American Electric Power, announced it planned to erect the biggest walking dragline in the world and have it up and running by 1969 at its Cumberland / Muskingum mines. The Big Muskie, a model built by Bucyrus-Erie of Milwaukee, went to work uncovering coal in May 1969, and this is the …
Productivity Analysis of Draglines Operating in Horizontal …
In an Indian study for a large dragline operated surface coal mine, a 40% gain in OE in terms of mining rate (m3/hr) resulted in a gain in EE with an annual reduction of GHG, TSP, and PM10 ...
Luminant Restores Pre-Owned Draglines
Draglines have long been considered the lowest cost per ton method for overburden removal in coal mine applications, and Bucyrus has been a leading force in the evolution of these majestic excavators. ... Texas, which is located about 150 miles from Kosse. Lastly, Bucyrus performed a complete electrical upgrade on the 8200 dragline, …
Usibelli Coal Mine
Founded in 1943, Usibelli Coal Mine (UCM) has grown to become the largest coal mining operation in Alaska utilizing the most modern mining equipment and state-of-the-art engineering to supply coal to six Alaska power plants and export coal to Chile, South Korea and several other Pacific Rim destinations. UCM sponsors many community events and …
Dragline or truck shovel?
Shareholders of coal mines typically want an operation with low capital and low cash operating costs; but also want to maximise value in discounted cash flow terms with known risk. ... there are increased opportunities for mines to have a more flexible mine plan, where the dragline and truck/shovel deployment can be varied to suit market ...
North Dakota lignite then and now
The future for coal really heated up when it was discovered lignite was a near perfect fuel for electrical generation. ... may be a buyer's market for big draglines. Many small coal mines have ...
Coal mine worker struck by rotating dragline | Resources …
Coal mine worker struck by rotating dragline What happened? On Sunday 14 January 2024, a worker was struck by a rotating dragline upon completion of cable relocation works, within the operational swing boundaries of the dragline. The worker luckily avoided serious injury. In 2021 a coal mine worker died after being injured in a …
MSHA
PDF Version COAL MINE FATALITY - On Sunday, November 5, 2006, a 52-year old electrician with 21 years of mining experience was fatally injured while troubleshooting the trailing cable for a Marion 8200 dragline at a surface coal mine.The electrician was working at an electrical junction box that supplied power to the dragline when he …
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