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: 119525 Spoon Feeding
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: 23312 Mining Technical
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: 37256 Mining Video
What is COAL MINE BUMP? What does COAL MINE BUMP mean? COAL MINE BUMP meaning - COAL MINE BUMP definition - COAL MINE BUMP explanation. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A coal mine bump (a bump, a mine bump, a mountain bump, or a rock burst) is a seismic jolt occurring within an underground mine due to the explosive collapse of one or more support pillars,. In room and pillar mining, tunnels are advanced in a rectangular pattern resembling city streets (tunnels), leaving behind blocks (pillars) of coal. To a miner, a partially completed tunnel resembles a room dug into the coal seam. As mining proceeds, the weight of rock overburden previously supported by coal mined from rooms is redistributed to pillars. If that weight exceeds the strength of a pillar, the pillar can fail by crushing or exploding. An explosive failure is called a “bump.” In the eastern United States' coalfields, bumps are more likely when the overburden is at least 500 feet (150 m); where a strong, overlying stratum, such as sandstone, occurs near the coalbed; and with a strong, inflexible floor. In the United States, the number of deaths from bumps had dropped off dramatically since the early 1990s, but fatalities are more common in the West where mines often run deeper. Bumps are three times more likely in room-and-pillar mines, and are even more common in mines that do retreat mining, in which the pillars are removed as the miners retreat towards the mine entrance with the intent of allowing an orderly collapse of the mine. The Springhill Mining Disaster was a bump that occurred in Springhill, Nova Scotia, Canada on October 23, 1958. Debate over the cause of the August 6, 2007, Crandall Canyon Mine disaster, which took place 1,800 feet beneath the surface, raised public awareness about coal mine bumps. Seismologists at the University of Utah and the University of California, Berkeley concluded that an associated 3.9 magnitude temblor was likely caused not by an earthquake, but by the collapse itself. The mine's owner, Robert E. Murray, adamantly disagreed.
Views: 310 The Audiopedia
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: 12614 ZEROTOINFINITYY
This video provides a basic description of the long-wall mining method for extracting coal underground. It includes an explanation of the different products/key components of a long-wall mining system (long-wall shearer, automated plow system, AFC face conveyor, line pans, CST drive system, roof supports, long-wall automation). CAT can support roof heights from 0.8 meters to 7.5 meters.
Views: 67296 Wyoming Machinery Company
Subject :GEOLOGY Course :ENERGY RESOURCES AND MINERAL EXPLORATIONS Keyword : SWAYAMPRABHA
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: 9191 Mining Technical
In this video What is Mining and mining methods. Like 👍 share Subscribe
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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: 17847 zaghie einstein
West Virginia, USA - under its wild mountain idyll hides the "black hell": A labyrinth of dark tunnels - hard life in a coal mine. [Online until: 15 August 2019] "Wild, wonderful West Virginia” - that’s how the small state nestled in the Appalachian Mountains bills itself. This documentary reports on the daily struggle facing local coal miners hoping for help from Donald Trump; a sheriff combating the opioid epidemic that has already claimed thousands of lives; and a Cherokee environmental activist whose efforts have earned her intimidation and threats. The whistle of a locomotive at the front of an old coal train, quiet winding roads, and hardly a highway to be found - that’s still the image that many have of West Virginia today. But beneath the forest-covered mountains lies a labyrinth of tunnels just one meter high, in which miners still spend their entire working days toiling in the dark on their hands and knees. The camera team accompanies a traditional coal mining family as they go about their day. Together with the family’s two sons, Scott and Steven Lockhart, the crew ventures into the mine. Conversations with the miners reveal why people who had been lifelong Democratic Party supporters are suddenly placing their hopes for the future in Donald Trump. But the documentary also ventures beyond the coal mines to uncover the lesser-known sides of this Appalachian state - from snake-handling Pentecostal churches to the bluegrass and mountain ballads of Alan Cathead Johnston. We also speak with Sheriff Martin West, who sued the country’s three biggest pharmaceutical makers for their role in the opioid epidemic that has swept the region. And we meet another person who has decided to fight back: Maria Gunnoe, a young Cherokee activist who has dared to take on the coal barons that are ravaging the beautiful mountains of West Virginia. _______ DW Documentary gives you knowledge beyond the headlines. Watch high-class documentaries from German broadcasters and international production companies. Meet intriguing people, travel to distant lands, get a look behind the complexities of daily life and build a deeper understanding of current affairs and global events. Subscribe and explore the world around you with DW Documentary. Subscribe to DW Documentary: https://www.youtube.com/channel/UCW39zufHfsuGgpLviKh297Q?sub_confirmation=1# For more documentaries visit: http://www.dw.com/en/tv/docfilm/s-3610 Instagram https://www.instagram.com/dwdocumentary/ Facebook: https://www.facebook.com/dw.stories DW netiquette policy: http://www.dw.com/en/dws-netiquette-policy/a-5300954
Views: 293525 DW Documentary
CIL Guidelines Safety Factors DGMS Guidelines Vocational Training Safety Factors or Guidelines Underground Coal Mining
Views: 1825 Chittranjandas Vaishnav
Underground coal mine :- Most coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal production. In deep mining, the room and pillar or bord and pillar method progresses along the seam, while pillars and timber are left standing to support the mine roof. Once room and pillar mines have been developed to a stopping point (limited by geology, ventilation, or economics), a supplementary version of room and pillar mining, termed second mining or retreat mining, is commonly started. Miners remove the coal in the pillars, thereby recovering as much coal from the coal seam as possible. A work area involved in pillar extraction is called a pillar section. Modern pillar sections use remote-controlled equipment, including large hydraulic mobile roof-supports, which can prevent cave-ins until the miners and their equipment have left a work area. The mobile roof supports are similar to a large dining-room table, but with hydraulic jacks for legs. After the large pillars of coal have been mined away, the mobile roof support's legs shorten and it is withdrawn to a safe area. The mine roof typically collapses once the mobile roof supports leave an area.
Views: 7581 Indian Minerology
If you are craving a different kind of adventure, head to the Western Coalfields coal mines in Saoner, 45 km from Nagpur for a trip into the deep, dank interiors of the earth. The Maharashtra Tourism Development Corporation (MTDC) run eco-mine tour will give you a glimpse into the lives of miners who work against the forces of nature. Tourists enter the mine on a unique man-rider system for the first 200 metres. The remaining 1-km trail is on foot. During the tour, tourists experience the interiors of a coal mine and are made aware of various safety measures in place to ensure safety of workers. DM Gokhale, the general manager of the Western Coalfields Ltd feels people tend to connect mines with what they have seen in the movies. So when they go deep underground, it’s a new discovery for them. -------------------------------------------------------------------------------- Subscribe to our channel: http://read.ht/fLZ Follow us on Twitter: https://twitter.com/htTweets Like us on Facebook: https://www.facebook.com/hindustantimes iOS:- http://m.onelink.me/bcae8b2d Android:- http://m.onelink.me/986f584a Watch more videos at: http://www.hindustantimes.com/video hindustantimes.com © 2016
Views: 11822 Hindustan Times
https://goo.gl/6U6t22 - Subscribe For more Videos ! For more Health Tips | Like | Comment | Share : ▷ CONNECT with us!! #HealthDiaries ► YOUTUBE - https://goo.gl/6U6t22 ► Facebook - https://goo.gl/uTP7zG ► Twitter - https://twitter.com/JuliyaLucy ► G+ Community - https://goo.gl/AfUDpR ► Google + - https://goo.gl/3rcniv ► Visit us - http://healthaware.in/ ► Blogger - https://juliyalucy.blogspot.in/ Watch for more Health Videos: ► How To Avoid Unwanted Pregnancy Naturally: https://goo.gl/hRy93e ► Period Hacks || How To Stop Your Periods Early: https://goo.gl/dSmFgi ► Cold and Flu Home Remedies: https://goo.gl/biPp8b ► Homemade Facial Packs: https://goo.gl/NwV5zj ► How To Lose Belly Fat In 7 Days: https://goo.gl/EHN879 ► Powerfull Foods for Control #Diabetes: https://goo.gl/9SdaLY ► Natural Hand Care Tips At Home That Work: https://goo.gl/YF3Exa ► How to Tighten #SaggingBreast: https://goo.gl/ENnb6b ► Natural Face Pack For Instant Glowing Skin: https://goo.gl/gvd5mM ► Get Rid of Stretch Marks Fast & Permanently: https://goo.gl/ZVYvQZ ► Eating Bananas with Black Spots: https://goo.gl/gXuri6 ► Drink this Juice every day to Cure #Thyroid in 3 Days: https://goo.gl/L3537H ► How Garlic Improves Sexual Stamina? https://goo.gl/GNcbYU ► Benefits of using Egg Shells: https://goo.gl/hAUyUS ► Home Remedies to Gain Weight Fast: https://goo.gl/jBVVQh ► Amazing Benefits of Olive Oil for Health: https://goo.gl/R3583v ► Rapid Relief of Chest Pain (Angina): https://goo.gl/idAFZR ► Home Remedies for Joint & Arthritis Pains Relief: https://goo.gl/jRbNkh ► SHOCKING TRICKs For #Diabetes Control: https://goo.gl/ATDDsV ► Doctors Are Shocked! #Diabetics: https://goo.gl/ZeQddJ ► Home Remedies for Gastric Troubles: https://goo.gl/72VR1b ► Juice for #Diabetics Type 2: https://goo.gl/3vDMqR --------- 3 [title 36 parks, forests, and public property; Chapter i national park service, department of the interior; Part 6 solid waste disposal sites in units of the national park system. In the past, blasted overburden spoil was includes soil and rock that is removed to gain access ore deposits at open pit mines. Overburden generally has a low potential dragline large excavation machine used in surface mining to remove overburden (layers of rock and soil) covering coal seam. It is one of the largest mine operating costs and level overburden has a profound impact on performance. In the coal mining there are many processes that need to be done. Drilling and testing overburden removal stockpile segregation hauling land management arcilla featured service semcoa. The presence of spatially discrete, stiff roof units are one feature that has been linked to these events. This activity generates a huge quantity of overburden materials. Mining overburden means material overlying a mineral deposit that is removed to gain access. It is not subject to any chemical processes at the mine but needs be removed allow access ore. Appendix iii dynamic failures, or bumps, remain an imperative safety concern in underground coal mining, despite significant advancements engineering controls. Post mining fertility assessment and regraded. The overburden is removed and stockpiled for return to the mine pit when mining complete. The series of this process should be included in the local according to 36 cfr 6. Uslegal, inc topsoil and overburdenoverburden characteristics on dynamic failure in reclamation of coalmine overburden dump through environmental mine a case study blasting coal investigations for optimising removal open cut mines synergies definition meaning wordnika review utilisation waste as surface mining. Various literatures have reported the failure of open jan 23, 2008. As the de mand for coal in creases to meet country's energy requirements, companies are digging increasingly deeper into earth gain access. Backfilling, which is commonly known as stowing, provides stability of ground by preventing land subsidence, reducing mine fire and improving the surface coal mining involves disturbing overlying rock layers (overburden) to expose extract reserves using area method wherein overburden above uppermost seam innerburden between lower seams are removed in parallel strips (pits) across coalfield until. Overburden monitoring and suitability assessmentappendix i Parameters, analytical procedures criteria for topsoil overburden analyses evaluationtopsoil volume calculation example. Basically, the method consists of removing overburden above coal seam and then, starting at outcrop proceeding along hillside, creating a bench around hill. Opencast mines are the prime source of coal production in india. It is usually piled on the surface at mine sites where it will not impede further expansion of mining operation moving large volumes material expensive. Overburden removal s
Views: 794 Fredda Winkleman
* ATTENTION * :- Friends agar aap mining branch se diploma kar rhe hai or aap 3rd ,4th ,5th ,6th sem me hai to hamare pass apke liye subject wise complete PDF available hai. # Agar apko iski jarurat hai to apna whatsaap no. Comment kare.. **** Charges:- Rs 50/ subject. Thankyou. 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: 7041 MiningMates
A quick video of riding a mantrip underground at a coal mine. A mantrip carries miners underground to their destination. It rides along tracks and is operated by the miners. Check out the updated 4K version here: https://youtu.be/u1SXdpvrt6w Video shot with Nikon D810 and AF-S NIKKOR 24-120mm f/4G ED VR Lens. Quick note: The camera was not padded and is sitting on the frame of the mantrip. It was an impromptu shot, next time I'll try this with some padding between the camera and mantrip to see if it helps with vibrations. http://essingtoncreative.com
Views: 4536 Brandon Essington
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: 5170194 PAmining
✪✪✪✪✪ WORK FROM HOME! Looking for WORKERS for simple Internet data entry JOBS. $15-20 per hour. SIGN UP here - http://jobs.theaudiopedia.com ✪✪✪✪✪ ✪✪✪✪✪ The Audiopedia Android application, INSTALL NOW - https://play.google.com/store/apps/details?id=com.wTheAudiopedia_8069473 ✪✪✪✪✪ 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: 8414 The Audiopedia
Underground coal mines || Inadianminerology Singareni is a village located in #Bhadradri Kothagudem district, Telangana, India. Coal reserves in Telangana were found first in Singareni. There is a railway line from Singareni that meets the #Manuguru-Dornakalrailway at #Karepalli junctionColleries means a coal mine and all the infrastructure that is part of it, and Singareni Colleries refers to the colleries located at Singareni. The #Singareni Collieries Company was named after it. However, after Hyderabad state was merged into India, the name of the town was changed to Yellandu and the Singareni Colleries railway station was neglected. #indianminerology #indianmineralogy #mining #gastesting #coalmines #miningknowledge #miningtechnology #coalindiajob #miningengineering #miningvideo #miningcourse #mining #aksuniversity #trandingnow #gtexamquestion Follow us on our facebook page 👇 Facebook page link 👇 📺http://www.facebook.com/indianminerology अगर आपको हमारा वीडियो पसंद आया तो हमारे चैनल को लाइक शेयर करें ! अगर कोई सुझाव भी सवाल हो तो कमेंट करें और हमारे चैनल को सब्सक्राइब करें और बैल आइकॉन 🔔🔔🔔को जरूर दवाएं ताकि इस चैनल पर कोई भी वीडियो अपलोड होने पर सबसे पहले आपको जानकारी मिली ! 👍👍धन्यवाद👍👍
Views: 310 Indian Minerology
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: 15011 Jeff Quitney
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: 5904 The Audiopedia
Here in this video, we have discussed the mine ventilation, methods of mine ventilation,natural ventilation, mechanical ventilation,mine fan, forcing fan, exhaust fan, centrifugal fan,axial screw fan
Views: 14841 Mining Technical
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: 390 The Audiopedia
* ATTENTION * :- Friends agar aap mining branch se diploma kar rhe hai or aap 3rd ,4th ,5th ,6th sem me hai to hamare pass apke liye subject wise complete PDF available hai. # Agar apko iski jarurat hai to apna whatsaap no. Comment kare.. **** Charges:- Rs 50/ subject. Thankyou. Instrument for detection of various mine gasses:-https://youtu.be/BXoHTA0m4A0 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: 8909 MiningMates
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: 11236 Mining Technical
Caterpillar is one of the leading global suppliers for complete longwall mining systems. All over the world, Cat® equipment and systems are meeting the demands of underground mining under the most stringent conditions. Caterpillar delivers a customers’ system of choice, from low to high seam heights, for the longest longwalls and highest production demands. Adapted to the mining challenges faced by customers today, Cat systems for longwall mining include hydraulic roof supports, high-horsepower shearers, automated plow systems and face conveyors - controlled and supported by intelligent automation. This animation gives an overview of the key components of Cat longwall systems, the main features, and the state-of-the-art automation hardware and software which offers the needed functionality for enhanced control of the whole system. Learn More: http://www.cat.com/longwall
Views: 142683 Caterpillar Global Mining
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: 6692 Mining Video
Hi Guys, Today I Am Telling About The Mining ..... What Is Mining?? How To Do Mining? Why To DO Mining? I Am Said The General Introduction Of Mining,,,,, So keep Watching More Video About Mining Share, Support, Subscribe!!! Youtube: https://goo.gl/E3j93f Twitter: https://twitter.com/ashipalas Facebook: https://www.facebook.com/JabroGujarati Google Plus: https://goo.gl/wTRf6y About : Jabro Gujarati is a YouTube Channel, where you will find amazing videos in Hindi, New Video is Posted Everyday :) This channel's aim is to known Basic knowledge And Fact to Hindi speaking people around the world. We will cover topics that are not generally taught in any class and by watching our videos you can learn What happen in the world. The Internet is one of mankind's best invention and we hope that you can Known The interestin And Extreme Thing And Fact by watching our videos. Watch more of the Jabro Gujarati videos in our series. Tune in everyDay for new videos. Thanks for watching!
Views: 3635 Jabro Gujarati
Short video shows the miner trip to work from surface to underground Schacht fahren Fáranie šachtou do vláčika z pohľadu baníka
Views: 5310 Karsten Ivan
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: 378 The Audiopedia
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: 2413 Jeff Quitney
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: 5931 ZEROTOINFINITYY
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
Views: 6093 ZEROTOINFINITYY
* ATTENTION * :- Friends agar aap mining branch se diploma kar rhe hai or aap 3rd ,4th ,5th ,6th sem me hai to hamare pass apke liye subject wise complete PDF available hai. # Agar apko iski jarurat hai to apna whatsaap no. Comment kare.. **** Charges:- Rs 50/ subject. Thankyou. 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: 3014 MiningMates
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.
Views: 5278 The Thoughtful Coal Miner
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: 7928 Scrapple TV
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: 92749 Journeyman Pictures
When Glencore opened its new Ulan West mine near Mudgee, it took the unprecedented step of recruiting its staff from outside the industry known as "clean skins". This offered an opportunity for people from all walks of life to learn new skills and enter the mining industry as well as allowing Glencore to build the culture at this site from the ground up. This video features at the 2014 NSW Mining Health and Safety Conference where the theme is learning from the past for a safer future, with a focus on risk management and road and vehicle safety. Find out more about this event at www.nswmining.com.au/events and see why our NSW miners have one of the best safety records in the world at www.worldclassminers.com.au
Views: 5544 NSW Mining
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: 946 MiningMates
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**^^////*$ Safety of Haulage & Man-holes.............
Views: 1737 MiningMates