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Underground Coal Mines
 
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Underground Coal Mine
Views: 178457 vivek khodiyar
Caving and stowing Definition in Hindi
 
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what is caving and stowing method Definition underground coal mines In Hindi
Views: 2321 Mining Saagar
How is coal mined? - What is Surface Mining and Underground Mining - Video
 
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How is coal mined? Read Full Story: http://www.spoonfeeding.in/2013/02/how-is-coal-mined-what-is-surface.html Mining is the process of removing coal from the ground. There are two types of mining: underground mining and surface mining. When the coal seam is fewer than 125 feet under the surface, it is mined by surface mining. Coal that is deeper than 125 feet is removed from the ground by underground mining. Underground mining is used when the coal seam lies deep in the earth. In an underground mine only some of the coal is removed. The coal that remains helps support the mine roof. Underground mines look like a system of tunnels. The tunnels are used for traveling throughout the mine, moving coal from place to place and allowing air to circulate in the mine. The coal that is mined is put on conveyor belts. The conveyor belts take the coal to the surface. There are three types of underground mines: slope, drift, and shaft. When the coal seam is close to the surface but too deep to use surface mining, a slope mine can be built. In a slope mine a tunnel slants down from the surface to the coal seam. A drift mine is built when the coal seam lies in the side of a hill or mountain. Drift mines may also be built in a surface mine that has become too deep. There are many drift mines in the eastern United States. The most common type of mine in Illinois is the shaft mine. These mines may be 125 to 1,000 feet deep. A large hole, or shaft, is drilled down into the ground until it reaches the coal seam.
Views: 109014 Spoon Feeding
Solid blasting in underground coal mines.In Hindi
 
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In this video i have discuss about blasting and , use of explosive and magazine capacity.
Views: 2059 Mining India
Underground Coal Mining
 
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A view from the drivers seat going into a mine where they use the room & pillar mining technique and another clip showing the longwall mining operation.
Views: 89962 MineralsInYourLife
Coal Mines Regulations 2017- Chapter-1 (Definitions)-Part-(1/4)
 
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A descriptive video covering explanations of Coal Mines Regulation 2017. Only for educational purpose. Please like comment and share your views. For any specific query write in the comments section.
Views: 7170 ZEROTOINFINITYY
General procedure for blasting in u/g coal mines || Sunday special video || 10
 
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General procedure for blasting in underground mines ‼️ बालस्टीगं की सामान्य कार्यप्रणाली ⁉️⁉️ 🔺Follow us on our Facebook page 🔵 Facebook page link: ➡️ https://www.facebook.com/miningtechnical अगर आपको हमारा विडियो पसंद आया तो हमारे चैनल को like,share,करे अगर कोई सुझाव या सवाल हो तो comment करे और हमारे चैनल को subscribe करे और bell icon🔔🔔🔔 को ज़रूर दबाए ताकि इस चैनल पर कोई भी विडियो upload होने पर सबसे पहले आपको जानकारी मिले जय हिन्द जय भारत
Views: 5294 Mining Technical
Types of mining methods || coal mining methods
 
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Here in this video we have discussed different types of mining methods including coal mining methods:- 1.Surface Mining:- Opencast Mining Auger Mining Strip Mining Contour mining Highwall Mining Hydraulic mining 2. Underground Mining Board and pillar Longwall Mining Shortwall Mining Coal gasification Mining Sub level caving Integrated caving Blasting gallery method Wongawilli Mining Bhaskar and Tipong Mining **Music Provided By NCS** ➡️ Title:- Alan Walker -Force[NCS Release] ➡️ Video link :- https://youtu.be/xshEZzpS4CQ ➡️ Artist Credits:- Alan Walker ➞ SoundCloud https://soundcloud.com/alanwalkermusic ➞ Facebook https://www.facebook.com/alanwalkermusic ➞ Twitter https://twitter.com/IAmAlanWalker ➞ Instagram http://www.instagram.com/alanwalkermusic
Views: 5734 Mining Technical
What is UNDERGROUND MINE VENTILATION? What does UNDERGROUND MINE VENTILATION mean?
 
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What is UNDERGROUND MINE VENTILATION? What does UNDERGROUND MINE VENTILATION mean? UNDERGROUND MINE VENTILATION meaning - UNDERGROUND MINE VENTILATION definition - UNDERGROUND MINE VENTILATION explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Underground mine ventilation provides a flow of air to the underground workings of a mine of sufficient volume to dilute and remove dust and noxious gases (typically NOx, SO2, methane, CO2 and CO) and to regulate temperature. The source of these gases are equipment that runs on diesel engines, blasting with explosives, and the orebody itself. The largest component of the operating cost for mine ventilation is electricity to power the ventilation fans, which may account for one third of a typical underground mine's entire electrical power cost. Flow-through ventilation is the main ventilation circuit for the mine. Air enters the mine from surface via a shaft, ventilation raise or adit. The air is distributed through the mine via internal ventilation raises and ramps, and flows are controlled by regulators and permanently mounted ventilation fans. An auxiliary ventilation system takes air from the flow-through system and distributes it to the mine workings via temporarily mounted ventilation fans, venturies and disposable fabric or steel ducting. Auxiliary fan and duct systems may be either forcing systems, where fresh air is pushed into mine headings, or exhausting systems that draw out contaminated air. Sufficient volume of air is required for proper ventilation. A bulk of electric power is required for driving fans. By installing variable speed control air quantity can be optimized hence the power. at every place in the mine where persons are required to work or pass, the air does not contain less than 19% of oxygen or more than 0.5% of carbon dioxide or any noxious gas in quantity likely to affect the health of any person; the percentage of inflammable gas does not exceed 0.75% in the general body of the return air of any ventilating district and 1.25% in any place in the mine. The volume (expressed in cubic feet per minute or cubic meters per second) of air required to ventilate an underground mine is determined by mining engineers based on a wide variety of parameters. In most countries minimum requirements are outlined by law, regulation or standards. However, in some developing countries the mandated ventilation requirement may be insufficient, and the mining company may have to increase the ventilation flow, in particular where ventilation may be required to cool the ambient temperature in a deep hot mine, however auto-compression must also be taken into account. as per CMR 130-2-(i) in every ventilating district, not less than six cubic metres per minute of air per personemployed in the district on the largest shift or not less than 2.5 cubic metres per minute of air per daily tonne output whichever is larger, passes along the last ventilation connection in the district which means the inbye-most gallery in the district along which the air passes. In temperate climates ventilation air may need to be heated during winter months. This will make the working environment more hospitable for miners, and prevent freezing of workings, in particular water pipes. In Arctic mines where the mining horizon is above the permafrost heating may not take place to prevent melting the permafrost. "Cold mines" such as Raglan Mine and Nanisivik Mine are designed to operate below 0°C. the wet bulb temperature in any working place does not exceed 33.5°C and where the wet bulb temperature exceeds 30.5°C arrangements are made to ventilate the same with a current of air moving at a speed of not less than one metre per second.
Views: 4390 The Audiopedia
Underground Coal Gasification 3D Animation
 
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I'm freelance 3d & MotionGraphic Artist From Bandung,West Java, Indonesia I'm creating this 3d Animation Project in September 2013 for Australian based consulting company who offering a broad range of Coal Seam Gas (CSG), www.csgexploration.com if you need my service like this you can contact me: Mobile :+62.813.1398.8488 E-mail : [email protected] Facebook : www.facebook.com/zaghie
Views: 14872 zaghie einstein
Colliery Meaning
 
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Video shows what colliery means. An underground coal mine, together with its surface buildings.. A facility that supplies coal.. Colliery Meaning. How to pronounce, definition audio dictionary. How to say colliery. Powered by MaryTTS, Wiktionary
Views: 69 SDictionary
How Coal Mines Work: "Mining and Preparation of Anthracite Coal" circa 1934 Delaware & Lackawanna
 
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Earth Sciences, mining, oil, etc. playlist:: http://www.youtube.com/playlist?list=PL33B1A9216BB65F7A more at http://scitech.quickfound.net Very good demonstration of coal mining processes in the 1930s. 'Underground mining scenes... Sequence shows miners leaving work, washing up and going home to greet families.' Reupload of a previously uploaded film with improved video & sound. Public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Anthracite Anthracite... is a hard, compact variety of mineral coal that has a high luster. It has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coals, which also include bituminous coal and lignite. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92.1% and 98%. The term is applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition. Anthracite ignites with difficulty and burns with a short, blue, and smokeless flame. Anthracite is categorized into standard grade, which is used mainly in power generation, and high grade (HG) and ultra high grade (UHG), the principal uses of which are in the metallurgy sector. Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. China accounts for the majority of global production; other producers are Russia, Ukraine, North Korea, Vietnam, the UK, Australia and the US. Total production in 2010 was 670 million tons... Other terms which refer to anthracite are black coal, hard coal, stone coal... blind coal... Kilkenny coal... crow coal... and black diamond. In the United States, anthracite coal history began in 1790 in Pottsville, Pennsylvania, with the discovery of coal made by the hunter Necho Allen in what is now known as the Coal Region. Legend has it that Allen fell asleep at the base of Broad Mountain and woke to the sight of a large fire because his campfire had ignited an outcropping of anthracite coal. By 1795, an anthracite-fired iron furnace had been built on the Schuylkill River. Anthracite was first experimentally burned as a residential heating fuel in the US on 11 February 1808, by Judge Jesse Fell in Wilkes-Barre, Pennsylvania, on an open grate in a fireplace. Anthracite differs from wood in that it needs a draft from the bottom, and Judge Fell proved with his grate design that it was a viable heating fuel. In spring 1808, John and Abijah Smith shipped the first commercially mined load of anthracite down the Susquehanna River from Plymouth, Pennsylvania, marking the birth of commercial anthracite mining in the United States. From that first mine, production rose to an all-time high of over 100 million tons in 1917... From the late 19th century until the 1950s, anthracite was the most popular fuel for heating homes and other buildings in the northern United States, until it was supplanted first by oil burning systems and more recently by natural gas systems... China today mines by far the largest share of global anthracite production, accounting for more than three-quarters of global output. Most Chinese production is of standard-grade anthracite, which is used in power generation. Increased demand in China has made that country into a net importer of the fuel, mostly from Vietnam, another major producer of anthracite for power generation, although increasing domestic consumption in Vietnam means that exports may be scaled back. Current U.S. anthracite production averages around 5 million tons per year. Of that, about 1.8 million tons were mined in the state of Pennsylvania...
Views: 1701 Jeff Quitney
Underground definition
 
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Bad conditions
Views: 9 craezzyzk
Bord and Pillar mining by continuous Miner in HINDI
 
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Please watch: "Mines Act 1952 | Video No 1| Committee | With MCQ | In HINDI |" https://www.youtube.com/watch?v=USzxioNpomo -~-~~-~~~-~~-~- Bord and pillar is an underground mining method for extracting coal from belowground of earth. Various machinery combinations are used for extracting. One of the combination is the continuous miner and shuttle car. Continuous miner cuts the coal from seam and load into shuttle car. This video shows working the combination of the Continuous miner, feeder breaker, power central, load haul and dump machine , shuttle car and roof bolter effectively. It has a working sequence according to an availability of the face. All these explanations are in the Hindi language.
Views: 31356 Mining Video
definition of depillaring in Hindi
 
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definition of depillaring
Views: 204 Mining Saagar
Shaft vs incline || difference between shaft and incline || mining || mining videos || shaft
 
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This video will explain the difference between vertical shaft and incline. These are the two approaches to the coal seam in underground mining,mining shaft, mining incline,coal, capital cost, ventilation etc
Views: 6622 Mining Technical
The Children Working On Indian Coal Mines
 
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Rat Hole Minors (2014): In the coal mines of India, tens of thousands of children are forced to work in "rat holes", tiny pits too small for adults to reach. Why are the authorities turning a blind eye to this lethal and illegal practice? For similar stories, see: The Children Risking Their Lives In Underwater Gold Mines https://www.youtube.com/watch?v=P1L_pxYZVwE Investigating BHP's $5bn Mining Disaster In Brazil https://www.youtube.com/watch?v=KF3Clm6T_kI Sulphur Mining - Indonesia https://www.youtube.com/watch?v=ciH1qw3eiHs Subscribe to journeyman for daily uploads: http://www.youtube.com/subscription_center?add_user=journeymanpictures For downloads and more information visit: http://www.journeyman.tv/film/6099/rat-hole-minors Like us on Facebook: https://www.facebook.com/journeymanpictures Follow us on Twitter: https://twitter.com/JourneymanVOD https://twitter.com/JourneymanNews Follow us on Instagram: https://instagram.com/journeymanpictures "We might get hit by a wire or rocks...along the path there are holes and you never know when you might fall", says 13-year-old Lakpa of the tiny, dark tunnels stretching over 50 metres into the earth that he works in each day. According to Hasina Karbith, a charity worker for Indian NGO Impulse, there are over 70,000 underage children working just in the mines of Meghalaya. The charity is trying to fight what they say is a rampant illegal industry of trafficking from Nepal and child labour in the mines. "We wrote more than 60 letters to the government with the findings and still we didn't get any response. I still remember the day when the government wrote back to us and said, 'you have to present the names of the 70,000 children. If you cannot do it in the next 15 days then your organisation is going to be shut down'." Dateline, SBS Australia – Ref. 6099 Journeyman Pictures is your independent source for the world's most powerful films, exploring the burning issues of today. We represent stories from the world's top producers, with brand new content coming in all the time. On our channel you'll find outstanding and controversial journalism covering any global subject you can imagine wanting to know about.
Views: 67016 Journeyman Pictures
India's Child Miners: Growing Up, Underground
 
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In the mountains of northeast India, children as young as 9 years old mine for coal.
Views: 41868 ABC News
How coal is formed - Practically demonstration!
 
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Learn about the coal formation process, where coal mines are located and different types of coal like peat, lignite, sub-bituminous, bituminous and anthracite coals. Chapter 2 - Class 11 NCERT | Origin of the earth https://goo.gl/IAcfjV Click here if you want to subscribe https://www.youtube.com/user/TheRealSengupta Check the other playlists of NCERT Geography videos Class 6 - https://goo.gl/DDFtIF Class 7 - https://goo.gl/ppPK05 Class 8 - https://goo.gl/OD3Gwh Class 9 - https://goo.gl/AIEXxQ Class 10 - https://goo.gl/inWIAR Class 11 - https://goo.gl/Pn5EIE Class 11 (Part 2) - https://goo.gl/X4zY9K Class 12 - https://goo.gl/Kszpz5 schools online online classes for middle schoolers online education programs for high school teaching online high school online courses for middle school
Views: 40143 Amit Sengupta
What is OPEN-PIT MINING? What does OPEN-PIT MINING mean? OPEN-PIT MINING meaning & explanation
 
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What is OPEN-PIT MINING? What does OPEN-PIT MINING mean? OPEN-PIT MINING meaning - OPEN-PIT MINING definition - OPEN-PIT MINING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the earth, such as long wall mining. Open-pit mines are used when deposits of commercially useful minerals or rocks are found near the surface; that is, where the overburden (surface material covering the valuable deposit) is relatively thin or the material of interest is structurally unsuitable for tunnelling (as would be the case for sand, cinder, and gravel). For minerals that occur deep below the surface—where the overburden is thick or the mineral occurs as veins in hard rock—underground mining methods are used to extract the valued material. Open-pit mines that produce building materials and dimension stone are commonly referred to as "quarries." Open-pit mines are typically enlarged until either the mineral resource is exhausted, or an increasing ratio of overburden to ore makes further mining uneconomic. When this occurs, the exhausted mines are sometimes converted to landfills for disposal of solid wastes. However, some form of water control is usually required to keep the mine pit from becoming a lake, if the mine is situated in a climate of considerable precipitation or if any layers of the pit forming the mine border productive aquifers.
Views: 5415 The Audiopedia
MINE GASES//GASSY MINE//IN U/G COAL MINES..खान की गैसे।।
 
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Mining Mate is a youtube channel which is meant for mining or mining related queries only. Our sole purpose is to make the people better understood about each and every facts or contents related to coal mining/underground coal mining.we are spreading our knowledge and ideas which is gained during practical training . Our only intent is to make you all very clear about each and every aspects related to mines area. I request you all to visit to our channel once you will definately be benifittedplz do like and subscribe our channel and comment in the comment box ..if you want us to touch any particular topic ...related to coal Mining************ //****Thankyou All**^^////*$ Oxygen Carbon Dioxide Nitrogen Fire damp black damp White damp Nitrous Fumes Stink damp Sulphur Dioxide Hydrogen Gob stink After damp
Views: 1086 MiningMates
Coal Mined
 
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Coal may keep the lights on...but it keeps many people in the dark. Through the story of my own experience as a former Appalachian coal miner, Coal Mined is a film about heritage, family, and coming to terms with the impact the coal industry has had on our lives and communities. www.thethoughtfulcoalminer.com -- While studying communications at Berea College​, I realized the importance of documentary film as a means of reaching the public. I took a documentary film class under the direction of Dr. Gordon Gray​ and, along with the assistance of two other students in our group, Dylan K. Mullins​, and Richard Childers, Coal Mined was brought to life. I was hesitant to do a documentary about myself, but time constraints while taking a full course load and having a family meant traveling back home to conduct more interviews was simply impossible. I was eventually able to take a digital editing class with Dr. Jacob Dickerson​, and now almost two years later, I decided to spend some time cleaning up the original cut. It's still very rudimentary, but at least a bit better than the original. Again thanks to Peter Hille of MACED​, Stephen Sanders of the Appalachian Citizens' Law Center​, David Cook of Grow Appalachia​, Terry L Steele​, and Wilma Lee Steele​. for their interviews. Thanks to Anne Lewis and Appalshop​ for footage from Justice in the Coalfields, East Tennessee State University​ for some of the archival photos, and here's a huge shout out to everyone at the Loyal Jones Appalachian Center​ and the dozens of professors at Berea College who saw something in me I often couldn't find.
What is COAL SEAM FIRE? What does COAL SEAM FIRE mean? COAL SEAM FIRE meaning & explanation
 
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What is COAL SEAM FIRE? What does COAL SEAM FIRE mean? COAL SEAM FIRE meaning - COAL SEAM FIRE definition - COAL SEAM FIRE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ A coal seam fire or mine fire is the underground smouldering of a coal deposit, often in a coal mine. Such fires have economic, social and ecological impacts. They are often started by lightning, grass, or forest fires, and are particularly insidious because they continue to smoulder underground after surface fires have been extinguished, sometimes for many years, before flaring up and restarting forest and brush fires nearby. They propagate in a creeping fashion along mine shafts and cracks in geologic structures. Coal fires are a serious health and safety hazard, affecting the environment by releasing toxic fumes, reigniting grass, brush, or forest fires, and causing subsidence of surface infrastructure such as roads, pipelines, electric lines, bridge supports, buildings and homes. Whether started by humans or by natural causes, coal seam fires continue to burn for decades or even centuries until either the fuel source is exhausted, a permanent groundwater table is encountered, the depth of the burn becomes greater than the ground’s capacity to subside and vent, or humans intervene. Because they burn underground, coal seam fires are extremely difficult and costly to extinguish, and are unlikely to be suppressed by rainfall. There are strong similarities between coal fires and peat fires. Across the world, thousands of underground coal fires are burning at any given moment. The problem is most acute in industrializing, coal-rich nations such as China. Global coal fire emissions are estimated to cause 40 tons of mercury to enter the atmosphere annually, and to represent three percent of the world's annual CO2 emissions. Coal seam fires can be divided into near-surface fires, in which seams extend to the surface and the oxygen required for their ignition comes from the atmosphere, and fires in deep underground mines, where the oxygen comes from the ventilation. Mine fires may begin as a result of an industrial accident, generally involving a gas explosion. Historically, some mine fires were started when bootleg mining was stopped by authorities, usually by blowing the mine up. Many recent mine fires have started from people burning trash in a landfill that was in proximity to abandoned coal mines, including the much-publicized Centralia, Pennsylvania, fire, which has been burning since 1962. Of the hundreds of mine fires in the United States burning today, most are found in the state of Pennsylvania. Some fires along coal seams are natural occurrences. Some coals may self-ignite at temperatures as low as 40 °C (104 °F) for brown coal in the right conditions of moisture and grain size. The fire usually begins a few decimeters inside the coal at a depth in which the permeability of the coal allows the inflow of air but in which the ventilation does not remove the heat which is generated. Two basic factors determine whether spontaneous combustion occurs or not, the ambient temperature and the grain size: The higher the ambient temperature, the more quickly the oxidation reactions proceed. The grain size and structure determine its surface area. Kinetics will be limited by availability of reactant, which in this case is carbon exposed to oxygen. Wildfires (lightning-caused or others) can ignite the coal closer to the surface or entrance, and the smouldering fire can spread through the seam, creating subsidence that may open further seams to oxygen and spawn future wildfires when the fire breaks to the surface. Prehistoric clinker outcrops in the American West are the result of prehistoric coal fires that left a residue that resists erosion better than the matrix, leaving buttes and mesa. It is estimated that Australia's Burning Mountain, the oldest known coal fire, has burned for 6,000 years. Globally, thousands of inextinguishable mine fires are burning, especially in China where poverty, lack of government regulations and runaway development combine to create an environmental disaster. Modern strip mining exposes smoldering coal seams to the air, revitalizing the flames.
Views: 179 The Audiopedia
depillaring with DOP stowing
 
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about mining
Views: 324 Dhagad Sai
What is BLACKDAMP? What does BLACKDAMP mean? BLACKDAMP meaning, definition & explanation
 
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What is BLACKDAMP? What does BLACKDAMP mean? BLACKDAMP meaning - BLACKDAMP pronunciation - BLACKDAMP definition - BLACKDAMP explanation - How to pronounce BLACKDAMP? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Blackdamp (also known as stythe or choke damp) is an asphyxiant, reducing the available oxygen content of air to a level incapable of sustaining human or animal life. It is not a single gas but a mixture of unbreathable gases left after oxygen is removed from the air and typically consists of nitrogen, carbon dioxide and water vapour. The suffix damp is believed to derive from the German word for vapours ("Dampf"). The word damp is used in similar mining terms such as white damp (carbon monoxide), fire damp (typically methane) and stink damp (hydrogen sulfide). Blackdamp is encountered in enclosed environments such as mines, sewers, wells, tunnels and ships' holds. It occurs with particular frequency in abandoned or poorly ventilated coal mines. Coal, once exposed to the air of a mine, naturally begins absorbing oxygen and exuding carbon dioxide and water vapor. The amount of blackdamp exuded by a mine varies based on a number of factors, including the temperature (coal releases more carbon dioxide in the warmer months), the amount of exposed coal, and the type of coal, although all mines with exposed coal produce gas. Blackdamp is considered a particularly pernicious type of damp (especially in a historical context), due to its omnipresence where exposed coal is found, and slow onset of symptoms. It produces no obvious odor (unlike the hydrogen sulfide of stinkdamp), is constantly being reintroduced to the air (instead of being released in pockets from actively mined sections), and does not require combustion in order to be released (unlike whitedamp or afterdamp). Many of the initial symptoms of oxygen deprivation (dizziness, light-headedness, drowsiness and poor coordination) are relatively innocuous and can easily be mistaken for simple fatigue, given the physically strenuous job of coal mining. The time between the onset of initial symptoms and the start of frank asphyxiation (and rapid unconsciousness) can be as short as seconds. Thus, if the warning signs are missed, a large number of miners can be rapidly incapacitated in the same short period of time, leaving no one to summon help. In addition to the danger inside the mine, blackdamp can be "exhaled" in large quantities from mines (especially long-abandoned coal mines with few outlets for escaping gas) during sudden changes in atmospheric pressure, potentially causing asphyxiation on the surface. The gas mixture has been responsible for many deaths among underground workers, especially miners. For example, the Hartley Colliery Disaster when the entire population of a colliery in north-east England were trapped when the beam of an engine suddenly broke and fell down the single shaft, blocking it with debris. It entombed 204 men and boys, who could not be rescued in time, and so suffocated in the blackdamp atmosphere, and died. In active mining operations, the threat from blackdamp is addressed with proper mineshaft ventilation as well as various detection methods, typically using miner's safety lamps or hand-held electronic gas detectors. The safety lamp is merely a specially designed lantern with a flame that is designed to automatically extinguish itself at an oxygen concentration of approximately 18% (normal atmospheric concentration of oxygen is ~21%). This low detection threshold gives miners an unmistakable warning and allows them to escape before any potentially incapacitating effects are felt.
Views: 267 The Audiopedia
Anthracite Coal Mining circa 1920
 
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more at http://scitech.quickfound.net/ "Lots of diagrammatic animation. Anthracite coal mining. Underground mining shots." Silent. Earth Sciences, mining, oil, etc. playlist:: http://www.youtube.com/playlist?list=PL33B1A9216BB65F7A Public domain film from the Prelinger Archive, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Anthracite Anthracite... is a hard, compact variety of mineral coal that has a high luster. It has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coals, which also include bituminous coal and lignite. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92.1% and 98%... Anthracite ignites with difficulty and burns with a short, blue, and smokeless flame. Anthracite is categorized into standard grade, which is used mainly in power generation, and high grade (HG) and ultra high grade (UHG), the principal uses of which are in the metallurgy sector. Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. China accounts for the lion's share of production; other producers are Russia, Ukraine, North Korea, Vietnam, the UK, Australia and the US. Total production in 2010 was 670 million tons... Terminology Other terms which refer to anthracite are black coal, hard coal, stone coal (not to be confused with the German Steinkohle or Dutch steenkool which are broader terms meaning all varieties of coal of a stonelike hardness and appearance, like bituminous coal and often anthracite as well, as opposed to lignite, which is softer), blind coal (in Scotland), Kilkenny coal (in Ireland), crow coal (or craw coal from its shiny black appearance), and black diamond. "Blue Coal" is the term for a once-popular and trademarked brand... Anthracite is similar in appearance to the mineraloid jet and is sometimes used as a jet imitation. Anthracite differs from ordinary bituminous coal by its greater hardness, its higher relative density of 1.3--1.4, and lustre, which is often semi-metallic with a mildly brown reflection. It contains a high percentage of fixed carbon and a low percentage of volatile matter... The moisture content of fresh-mined anthracite generally is less than 15 percent. The heat content of anthracite ranges from 22 to 28 million Btu per short ton (26 to 33 MJ/kg) on a moist, mineral-matter-free basis... Anthracite may be considered to be a transition stage between ordinary bituminous and graphite, produced by the more or less complete elimination of the volatile constituents of the former... History of mining and use In southwest Wales, anthracite has been burned as a domestic fuel since at least medieval times. It was mined near Saundersfoot. In the United States, anthracite coal history began in 1790 in Pottsville, Pennsylvania, with the discovery of coal made by the hunter Necho Allen in what is now known as the Coal Region... By 1795, an anthracite-fired iron furnace had been built on the Schuylkill River... In spring 1808, John and Abijah Smith shipped the first commercially mined load of anthracite down the Susquehanna River from Plymouth, Pennsylvania, marking the birth of commercial anthracite mining in the United States. From that first mine, production rose to an all-time high of over 100 million tons in 1917. From the late 19th century until the 1950s, anthracite was the most popular fuel for heating homes and other buildings in the northern United States... Many large public buildings, such as schools, were heated with anthracite-burning furnaces through the 1980s... http://en.wikipedia.org/wiki/Coal_mining The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United States, United Kingdom, and South Africa, a coal mine and its structures are a colliery... Coal mining has had a lot of developments over the recent years, from the early days of men tunneling, digging and manually extracting the coal on carts to large open cut and long wall mines. Mining at this scale requires the use of draglines, trucks, conveyor, jacks and shearers...
Views: 12369 Jeff Quitney
What is COALBED METHANE? What does COALBED METHANE mean? COALBED METHANE meaning & explanation
 
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What is COALBED METHANE? What does COALBED METHANE mean? COALBED METHANE meaning - COALBED METHANE definition - COALBED METHANE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Coalbed methane (CBM or coal-bed methane), coalbed gas, coal seam gas (CSG), or coal-mine methane (CMM) is a form of natural gas extracted from coal beds. In recent decades it has become an important source of energy in United States, Canada, Australia, and other countries. The term refers to methane adsorbed into the solid matrix of the coal. It is called 'sweet gas' because of its lack of hydrogen sulfide. The presence of this gas is well known from its occurrence in underground coal mining, where it presents a serious safety risk. Coalbed methane is distinct from a typical sandstone or other conventional gas reservoir, as the methane is stored within the coal by a process called adsorption. The methane is in a near-liquid state, lining the inside of pores within the coal (called the matrix). The open fractures in the coal (called the cleats) can also contain free gas or can be saturated with water. Unlike much natural gas from conventional reservoirs, coalbed methane contains very little heavier hydrocarbons such as propane or butane, and no natural-gas condensate. It often contains up to a few percent carbon dioxide. Coalbed methane grew out of venting methane from coal seams. Some coal beds have long been known to be "gassy," and as a safety measure, boreholes were drilled into the seams from the surface, and the methane allowed to vent before mining. Coalbed methane as a natural-gas resource received a major push from the US federal government in the late 1970s. Federal price controls were discouraging natural gas drilling by keeping natural gas prices below market levels; at the same time, the government wanted to encourage more gas production. The US Department of Energy funded research into a number of unconventional gas sources, including coalbed methane. Coalbed methane was exempted from federal price controls, and was also given a federal tax credit. In Australia, commercial extraction of coal seam gas began in 1996 in the Bowen Basin of Queensland. Gas contained in coal bed methane is mainly methane and trace quantities of ethane, nitrogen, carbon dioxide and few other gases. Intrinsic properties of coal as found in nature determine the amount of gas that can be recovered. To extract the gas, a steel-encased hole is drilled into the coal seam 100 to 1,500 metres (330 to 4,920 ft) below ground. As the pressure within the coal seam declines due to natural production or the pumping of water from the coalbed, both gas and produced water come to the surface through tubing. Then the gas is sent to a compressor station and into natural gas pipelines. The produced water is either reinjected into isolated formations, released into streams, used for irrigation, or sent to evaporation ponds. The water typically contains dissolved solids such as sodium bicarbonate and chloride but varies depending on the formation geology. Coalbed methane wells often produce at lower gas rates than conventional reservoirs, typically peaking at near 300,000 cubic feet (8,500 m3) per day (about 0.100 m3/s), and can have large initial costs. The production profiles of CBM wells are typically characterized by a "negative decline" in which the gas production rate initially increases as the water is pumped off and gas begins to desorb and flow. A dry CBM well is similar to a standard gas well. The methane desorption process follows a curve (of gas content vs. reservoir pressure) called a Langmuir isotherm. The isotherm can be analytically described by a maximum gas content (at infinite pressure), and the pressure at which half that gas exists within the coal. These parameters (called the Langmuir volume and Langmuir pressure, respectively) are properties of the coal, and vary widely. A coal in Alabama and a coal in Colorado may have radically different Langmuir parameters, despite otherwise similar coal properties.
Views: 4038 The Audiopedia
Whitehaven Narrabri Undergound Coal Mine
 
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This short documentary shows you the above-ground footprint of the Narrabri Underground Coal Mine and what this means for the surface environment. It also addresses some recent (Jan 2017) Exploration Licence Applications which partially cover the Pilliga East State Forest. It was produced in conjunction with the Leard Forest Research Node.
Views: 489 People 4 The People
Hard Rock Mining
 
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A brief video of underground hard rock mining in Tennessee.
Views: 17291 Planmar Jones
To coal shaft- from surface to the underground train
 
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Short video shows the miner trip to work from surface to underground Schacht fahren Fáranie šachtou do vláčika z pohľadu baníka
Views: 3065 Karsten Ivan
QDS Recovery Pod for use in Underground Coal Mines
 
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The QDS Recovery Pod is designed as a safe and efficient means of carrying and recovering loads in an underground coal mine. It is designed to carry a load of 7000kg and is fitted with a hydraulically operated winch with 6000kg of pulling power to recover a load.
Let's Blast!
 
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NOTE: Although this video shows an up-close look at the blasting process, NEVER go near an active surface mine or blast site without Federal training and permission. FYI, the white bags are Emulsified Ammonium Nitrate. The read cap is TNT and the silver rod that is connected to it by the yellow wire is the blasting cap, it's what ignites the shot. The white pebbles that are emptied into the blast holes by the powder trucks are the main explosive- "ANFO" or Ammonium Nitrate, which is a mixture of fertilizer and diesel fuel. Once the holes are filled with explosives, rock fines or "stemming" is pushed back in the holes and packed down to keep the explosives under pressure. After all the holes are loaded and rigged up, it's time for the fireworks! And remember kids, don't try this at home! Want to see more Blasting? Join the PAmining Channel and Facebook! http://www.facebook.com/pages/PAmining/164948266897468
Views: 2850522 PAmining
Master Stroke: Reality of the coal mines and its production
 
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Master Stroke: Reality of the coal mines and its production
Views: 1769 ABP NEWS
Handling Explosives in Underground Mines
 
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http://www.cdc.gov/niosh/mining/Works/coversheet1870.html "Handling Explosives in Underground Mines” is about underground miners dealing with both creation and destruction in a typical day. Though explosives are safer than ever before, caution is still needed when dealing with such a powerful force. This video teaches new miners basic safety rules to keep from hurting themselves or others while handling explosives.
Views: 1766 NIOSH
QDS Duckbill Ejector for use in Underground Coal Mines
 
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The QDS Duckbill Ejector is designed as a safe and efficient means of carrying, ejecting and retrieving palletised products and bulky loads in a underground coal mine. It is designed to carry a load of 6000kg and includes using hydraulically operated pusher plates to eject and retrieve a load in a controlled manner. For more info, visit http://CustomMiningProducts.com.au
How many type of coal mines (Hindi)
 
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How many types of coal mines there are three type of coal mines first Underground or opencast and combined mines
Views: 258 Mining Saagar
Coal Mines Regulations 2017- Chapter-1 (Definitions)-Part-(2/4)
 
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A descriptive video covering explanations of Coal Mines Regulation 2017. Only for educational purpose. Please like comment and share your views. For any specific query write in the comments section. Detailed definition of committee as under Mines Act 1952 https://youtu.be/Hlulf_v_ohg
Views: 3571 ZEROTOINFINITYY
Black damp in a coal mine!
 
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Me and a few guys come across black damp and shoe its affect on the safety lamp.
Views: 1974 NJ UNDERGROUND
What Is A Seam In A Mine?
 
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Multi seam mining of the deep waterberg resourcesintroduction new colliery to mine coal worth 200m wakefield express. The influence of seam height on lost time injury and fatality rates at underground thin coal mining in virginia semantic scholar. The coal is then loaded onto large trucks or conveyors for transport to either the preparation plant directly where it will be used. Mine a rich seam of sth meaning, definition, what is mine to take advantage strong feeling or quality in particular situation. Added in world of warcraft legion the influence seam height on lost time injury and fatality rates at small underground bituminous coal mines. Underground mining is practical in surface (sometimes called 'opencast' the uk), coal seam accessed by removing rock overburden; A process that benefits from furthers your understanding of how to mine leystone seams more effeciently. Most open cast mines in the united states extract bituminous coal an outburst is sudden and violent ejection of coal, gas rock from a face liberated seam into boreholes transported out mine via pipe range. Multi seam mining of the deep waterberg resourcestschool engineering, these are used to provide access underground mines extracting same as open cut or additional deeper seams once cost overburden 6 apr 2015 people being invited buy shares in a new colliery which is expected start september. Cambridge dictionary english mine a rich seam of sth class "" url? Q webcache. Seam coal mining cdc stacksthe wv seam. In places the seam might meet surface. Peters rh(1), fotta b, mallett lg undergroundmining in virginiamcphersonvirginia center for coal and energy research wits special edition volume i. This is an uncategorized spell. Coal seam definition of coal by the free dictionarycoal mining wikipedia. Outburst (mining) wikipediathick seam mining how is coal mined? National museum for england. Drift mines reach the coal by driving a roadway at slope from development of in more extreme ground conditions such as those associated with multiple seam miningusing combined system vehicle haulage and conveyor belts, extracted is transported to surface. Discovery of additional major coal seam transforms poplar grove. Learn more adit a nearly horizontal passage from the surface by which mine is main break occurs over seam at an angle vertical equal to half dip seam, bed stratum of ore or coal thick enough be mined with profit; 'he worked in beds' coalface part that being cut drift mining either deposit underground methods, working seams accessed adits driven into outcrop once exposed, it drilled, fractured and thoroughly strips. Glossary of mining terms kentucky coal education. Googleusercontent search. New crofton co op colliery is discovery of additional major coal seam transforms poplar grove mineoct 19, 2016 1 00 pm edt19, Mine a rich sth meaning in the cambridge english dictionary. Mine a rich seam of sth meaning in the cambridge english dictionary. Surface mining openlearn open technique
Views: 51 Another Question
Dumps in Mines | Mine Ventilation | In Hindi
 
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This video contains important informations about dumps in mines. Occurrence of gaseous impurities in mine atmosphere is known as Damp. Damps in mine Mixture of Methane CH4 and air. Explosive on composition between 5.4% to 14.8%. Reduce presence of Oxygen Danger to Life Damps in mine Mainly Mixture of Carbon dioxide CO2 and Nitrogen N2. Also known as Chokedamp. Increased presence of Blackdamp will reduce presence of Oxygen and causes danger to life. Damps in mine Mainly Mixture of Gas left after coal dust or fire damp explosion. Carbon monoxide CO is Main element in this damp. In Afterdamp , Carbon monoxide is causing more death due to its chemical properties. Damps in mine Mixture of Carbon monoxide CO and air. Source of Carbon monoxide is other than explosion. Such as strata emission, engine exhaust. Damps in mine Mixture of Hydrogen sulphide H2S and air. It is a poisonous gas. It has more adverse effect compared to Carbon monoxide.
Views: 5171 Mining Video
What is BOOTLEG MINING? What does BOOTLEG MINING mean? BOOTLEG MINING meaning & explanation
 
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What is BOOTLEG MINING? What does BOOTLEG MINING mean? BOOTLEG MINING meaning - BOOTLEG MINING definition - BOOTLEG MINING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Bootleg mining shoemaker mining is illegal coal mining. The term originated around the 1920s, though the practice probably predates that. Generally, a bootleg mine (sometimes called a Bootleg Pit) is a small mine dug by a handful of men. Often this took place surreptitiously on land owned by somebody else, such as a coal company. They were frequently dug by coal miners off official tunnels in order to procure additional, free coal for themselves, a practice that causes additional ramifications when fighting mine fires. Sometimes small pits are hidden under houses or outbuildings. Usually, the mine is not large enough to turn around in. The pits are known for being unsafe, and often causing collapse. The practice has died away in the United States; an American with simple equipment cannot dig enough coal in a day to reach a living wage. Bootleg mines in China are very common, as are the fatalities resulting from unregulated mining.
Views: 75 The Audiopedia
Rock Mass Rating(R.M.R)//Types of roof in mines//in hindi//Indian
 
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Firedamp proprties part-1-https://youtu.be/GzX1ZDJB194 Mining Mate is a youtube channel which is meant for mining or mining related queries only. Our sole purpose is to make the people better understood about each and every facts or contents related to coal mining/underground coal mining.we are spreading our knowledge and ideas which is gained during practical training . Our only intent is to make you all very clear about each and every aspects related to mines area. I request you all to visit to our channel once you will definately be benifittedplz do like and subscribe our channel and comment in the comment box ..if you want us to touch any particular topic ...related to coal Mining************ //****Thankyou All**^^////*$ S.D.L details..https://youtu.be/c-rf8oiT2JE https://www.youtube.com/channel/UCCSuIaRXFnqBIH3mra3UzXA Channel link
Views: 3448 MiningMates
regulation 30 || CMR 1957 || DEFINITION
 
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REGULATION 30 What is mine ? what is financial year ?
Views: 471 Mining Technical
Coal Mining Dreams
 
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Views: 60 CMCeducation
jharkhand coal mines and fire inside story
 
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Jharkhand's full story of coal mines and fire
Views: 799 pankaj kumar Pathak
Hard Coal: Last of the Bootleg Miners (screener copy)
 
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Directed by Marc Brodzik and Produced by Woodshop Films. US. 81 mins. Filmed from 2004-2008, completed in 2009. The discovery of anthracite, or hard coal, in northeastern Pennsylvania more than 200 years ago resulted in hundreds of corporate mines in this eleven county area throughout the early 20th century. Although anthracite coal makes up only 2 percent of all the coal reserves in the United States, the area boasts more than 7.3 billion tons of this clean burning coal in a very concentrated geography. In the mid 1800s, there were hundreds of active mines with more than 17,000 coal miners- mostly poor immigrants- toiling in them for twelve hours daily. The corporations had little concern with the health of the workers, and it was extremely dangerous work, with frequent accidents and few safety measures. Miners were burned in gas explosions, crushed by tunnel collapses and run over by mine cars. If they survived the job, many miners suffered the slow and painful suffocation called black lung, caused by continual exposure to coal dust. Today, only 6 anthracite mines are left in Pennsylvania, down from 60 in 1995 and more than 140 a decade earlier. These remaining mines are worked by "bootleg" miners- typically independent, family-centric teams struggling to carry on the family tradition and support their families, working in mines they may have dug themselves. This film will bring you face-to-face with the proud, persevering individuals facing these challenges. Share their frustration with the current system and their fear of losing dignity, independence and the only means of survival they know.
Views: 1272 Scrapple TV
Coal Mines Regulation 2017 || CMR 1957 || mining videos || cmr 2017
 
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A new coal mine regulation has been formed which will supersede coal mines regulation 1957. This is coal mines regulation 2017
Views: 9690 Mining Technical
COAL MINES REGULATIONS, 2017 || NEW C.M.R CONTENTS || ALL IN ONE
 
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Mining Mate is a youtube channel which is meant for mining or mining related queries only. Our sole purpose is to make the people better understood about each and every facts or contents related to coal mining/underground coal mining.we are spreading our knowledge and ideas which is gained during practical training . Our only intent is to make you all very clear about each and every aspects related to mines area. I request you all to visit to our channel once you will definately be benifittedplz do like and subscribe our channel and comment in the comment box ..if you want us to touch any particular topic ...related to coal Mining************ //****Thankyou All**^^////*$
Views: 332 MiningMates
How made Coal mining model exhibition at kolkata
 
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Model size 8feet by12feet mechanical work by Gautam Biswas coal-mining rail and trucks,bulldozer,heavy-duty vehicles .all moments and sound effects of this type of any size of your requirements model making you contact me at+919899578726.
Views: 7359 Gautam Biswas