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Coal mining

Coal mining is the process of extracting 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 Kingdom and South Africa a coal mine and its structures are a colliery a coal mine - a pit and the above-ground Get price

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The Advantages of Open Pit Mining

Mar 13 2018The Advantages of Open Pit Mining Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly The working conditions are safer for the miners because there is no risk of cave in or toxic gas Open pit mining is the preferred method for mining gold silver and uranium This type of mining is also used to dig for coal and building stone Get price

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What are some of the most important disadvantages and

Sep 06 2016Underground Mining is a method of Mining where the mineral is extracted without removing the top soil and rocks In this way we do not disturb the surface feature such as forest agriculture land rivers and residential areas The major disadvantGet price

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What is Underground Mining? (with pictures)

Sep 24 2019Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them This is in contrast with techniques like open pit mining in which the surface layers of ground are scooped away to access deposits or mountaintop removal in which the top of a mountain is simply shaved off to Get price

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Open Cut or Underground Mining

Oct 21 2017Open-cut mining is responsible for 65 percent of the raw coal production in New South Wales Open-cut is also a good method for gold and copper Underground mining Underground mining occurs underground through the creation of tunnels These tunnels go deep into the mineral seam This can be in excess of hundreds of metres Tunnels are necessary to move equipment into the mineral zone Coal Get price

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Open Cut and Underground Mining

Underground Mining Underground Mining is generally used for areas where the mineral seam is too far underground for open cut mining to be of use A tunnel called a decline is created to allow workers and machinery to reach the location of the minerals Stope mining is used for most hard rock mining of minerals such as copper silver lead and zinc Get price

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What are the differences between open pit mining

Nearly 90 billion metric tons of coal within 50 meters of the ground level are potentially available for strip mining Underground mining is done in the subsurface Underground mining is dangerous for mine workers In Turkey for instance two years ago (almost 3 years ago) one underground mining accident killed 310 workers Get price

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The Advantages of Open Pit Mining

Mar 13 2018The Advantages of Open Pit Mining Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly The working conditions are safer for the miners because there is no risk of cave in or toxic gas Open pit mining is the preferred method for mining gold silver and uranium This type of mining is also used to dig for coal and building stone Get price

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Surface Mining Methods and Equipment

Most bauxite iron and copper ore is mined by open pit techniques lead and zinc ore are principally extracted by underground mining methods and precious metals particularly gold and most notably in the USA and Australia tend to be recovered in recent years Get price

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Open Pit Mining Pros Cons

Open-pit mining is much safer than shaft mining In underground mining the threat of a cave-in or release of toxic gas is a constant concern When shaft mining was the most common method of ore extraction thousands died in cave-ins gas events and accidents involving equipment In 1907 alone more than 3 200 deaths related to mining occurred Get price

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The many advantages of underground mining

Apr 27 2015Since it is a process wherein ore and minerals are extracted from deep underground it does not incur large damages to the surface environment of the mine area It doesn't create the mess typically present in open-pit/surface mining It doesn't need breaking up Get price

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under ground vs open pit coal mining in india

under ground vs open pit coal mining in india Home / under ground vs open pit coal mining in india ch4 emissions coal mining and handling - IPCC - Task Force on Underground coal mining releases more methane than surface or open-pit Increased production in India China and Indonesia through the 1990s may lead to Get price

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Top 10 deep open

Sep 26 2013Grasberg mine located in the Papua province of Indonesia currently ranks as the world's seventh deepest open pit operation The miming operation at Grasberg consists of both open pit and underground mines The Grasberg open pit is more than 550m deep Grasberg is the largest gold mine in the world The mine also produces copper and silver Get price

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CDC

Underground and Surface Mining Facts - 2008 (HTML) Surface work locations include surface operations at underground mines surface operations (strip or open pit) auger culm banks dredge other surface operations independent shops and yards and mills or preparation plants Mining sectors include coal operators metal operators nonmetal Get price

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Types of Australian mine Open Pit or Underground Mine

Underground and Surface Mining Facts - 2008 (HTML) Surface work locations include surface operations at underground mines surface operations (strip or open pit) auger culm banks dredge other surface operations independent shops and yards and mills or preparation plants Mining sectors include coal operators metal operators nonmetal Get price

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Open Pit Mining Pros Cons

Open-pit mining is much safer than shaft mining In underground mining the threat of a cave-in or release of toxic gas is a constant concern When shaft mining was the most common method of ore extraction thousands died in cave-ins gas events and accidents involving equipment Get price

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The Actual Difference Between Surface and Underground Mining

Feb 23 2018General Process In most underground mining methods deep vertical tunnels called shafts are drilled into the ground along with a set of horizontal tunnels called drifts from the shaft bottom to access the ore Then longwall and continuous miners break up the ore deposit which is transported back to the surface by conveyors Get price

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Coal mining

Coal mining is the process of extracting 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 Kingdom and South Africa a coal mine and its structures are a colliery a coal mine - a pit and the above-ground Get price

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Underground versus Open Pit Mining

There are open pit mines all over the world and they yield everything from clay and coal to uranium and gold Underground Mining If an area's open pit mines are exhausted or impossible to build due to the inaccessibility of the desired resources the mining process goes underground Get price

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Surface Coal Mining Methods in Australia

Surface Coal Mining Methods in Australia 5 2 Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining The mines are now operating at significantly higher annual tonnages growing deeper more complex andGet price

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Open

Contour mining is associated with coal This bed of coal is located at an elevation in a mountain range or any other hilly area It is a method of strip or surface mining It is also referred to as Bench mining The coal is extracted from a mountainous area where it is not possible to extract the entire seam using mountain top removal mining Get price

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how to decide coal opencast vs underground

open pit coal mining vs underground coal mining Feb 26 2015 Surface strip mining (also known as area open pit or open cast Historical underground coal mining can pose a hazard if shafts or adits are Get Price difference between open cast mining shaft mining Get price

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Coal Mining Methods

Other underground coal mines are laid out in a checkerboard of rooms and pillars (Fig 2) and the mining operation involves cyclical step by-step mining sequences The rooms are the empty areas from which coal has been mined and the pillars are blocks of coal (generally 40 to 80 feet on a side) left to support the mine roof Get price

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Open Cut or Underground Mining

Oct 21 2017Open-cut mining is responsible for 65 percent of the raw coal production in New South Wales Open-cut is also a good method for gold and copper Underground mining Underground mining occurs underground through the creation of tunnels These tunnels go deep into the mineral seam This can be in excess of hundreds of metres Tunnels are necessary to move equipment into the mineral Get price

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What is one environmental advantage that underground

Aug 05 2017Both types of mining underground and open pit pose severe environmental impacts Similar problems can be identified for both methods but the amount of severity can be different Open pit mining being carried out on the surface directly impact tGet price

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Strategic mining options optimization Open pit mining

Also in the concurrent open pit and underground mining scenario the optimizer prefers extracting blocks using open pit mining Although the underground mine could access ore sooner the mining cost differential for open pit mining is more than compensated for by the discounting benefits associated with earlier underground mining Get price

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The Difference Between Underground Mining And Surface Mining

Apr 21 2014Underground mines are large tunnels that are dug deep into the ground to reach minerals that are too far underground to be reached from surface mines Surface mining can be done on mountain tops or on surface of the beaches The surface of the beach is rich with heavy minerals Heavy mineral mining is carried out extensively in Kerala and Tamil Nadu Get price

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r/mining

You remove the overburden take the ore/coal and move another step in Behind you land reclamation can begin relatively soon As such the 'mine' moves across the land over time Open pits are for deposits that are tilted or even vertical Extraction is limited to a relatively smaller area and the mining operation moves down over time Get price

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Open Pit Mine Planning and Design Third Edition ~ Mining

Open Pit Mine Planning and Design is an excellent textbook for courses in surface mine design open pit design geological and excavation engineering and in advanced open pit mine planning and design The principles described apply worldwide In addition the work can be used as a practical reference by professionals Get price

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Underground v s Surface Coal Mines Is Deep Drilling

Underground mining Underground or "deep" mining consist mostly of two methods - room-and-pillar and longwall mining In room-and-pillar coal deposits are mined by cutting a network of "rooms" into the coal seam and leaving behind "pillars" of coal to support the roof of the mine The coal is Get price

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Open Pit To Underground Mining

Open pit mining is a technique of open pit mining extraction of rock or minerals from the earth by their removal from an open pit sky this form differs from mining methods requiring a tunnel or underground mining open pit mines are used when dep Read the rest Open pit underground mining alibabacomGet price

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NUMERICAL MODELING OF OPEN PIT (OP) TO

open pit mining (OP) illustrated with selected examples of case studies on OP-UG interaction followed by an original experiment based on numerical modeling method This is first such study for the genuine conditions of the coal mining in Vietnam Get price

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