Strip mining and subsurface mining Strip mining (or surface mining) is performed when surface soil and rock are stripped off to reach the mineral of concern. When such operations are done, surface water bodies (lakes, streams, etc) gets acidity. Acid mine drainage occurs when water molecules infiltrates the spoil banks. The water reacts with sulfide minerals to produce sulfuric acid.
OPEN CAST MINING When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method. In this process, the area is cleared of all topsoil and vegetation, this material is stockpiled and used later when rehabilitating the area once mining is finished. UNDERGROUND ...
Underground mining has a lower ground footprint than open pit mining. The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them which are gradually cut ...
Jun 06, 2010· Best Answer: Open pit mining is used for ore bodies close to the surface, and is basically blasting the rock, which is then taken away by trucks to be processed. Underground mining however, is a lot more complex. Underground drive are dug to get as …
Apr 02, 2018· Differences between underground mining and open pit mining. April 2, 2018, 6:09 pm. ... is a deposit of zinc silver that is mined underground. The Witwatersrand gold mine in South Africa is an excellent example of underground mining that exploits gold from ancient rocks at depths of up to 4 km underground.
Open Cut Mining There are many differences between open cut and underground mining. When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method.
Apr 21, 2014· The Difference Between Underground Mining And Surface Mining 1. The Difference Between Underground Mining And Surface Mining The process of removal of essential mineral ores or geological substances from soil or sand is called mining. These minerals are of great value and are abundantly available in rocks and earth's surface.
The two types of mining are Open-cast mining and Underground mining. Underground mining is further divided in to Adit mining and Shaft mining. ... What is difference between mine …
what is the difference between underground and open cast . that said there is a huge difference between deep mining coal and open cast for people who live nearby. a modern deep mine is mostly hidden underground and looks chat online. studienwahl.de, geoengineering, mine surveying what is the difference between underground and open cast mining; what is the machine
Aug 22, 2017· The differences between the many kinds of mines, especially open pit mines and underground mines, are many, and miners tend to prefer one over the other. Every mining site has its natural and man-made characteristics that make it unique.
Open Cut and Underground Mining iMINCO. Open Cut Mining There are many differences between open cut and underground mining. When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method.
Oct 21, 2017· 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 is the largest portion of underground mining.
What is the difference between an opencast mine and an open pit ... Sep 6, 2006 ... Best Answer: An open cast is when it's a huge open area (with no roof, so you can look in and it lets the sun in), big enough to drive trucks...
Oct 15, 2017· 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. Open pit- Reclamation after completion Open cast- Reclamation during mining open pit ge...
The Difference Between Underground Mining And Surface … Apr 21, 2014· The Difference Between Underground Mining And Surface Mining 1. The Difference Between Underground Mining And Surface Mining The process of removal of essential mineral ores or geological substances from soil or sand is called mining.
higher than for surface mines. The difference between the injury rates per one million tons of coal production further demonstrates this point – underground mining is less favorable and accidents in underground mines tend to be more serious than for surface
Apr 30, 2017· -- Created using PowToon -- Free sign up at -- Create animated videos and animated presentations for free. PowToon is a free ...
What is the difference between underground mining and surface mining? Surface mining is a method of mining used to extract minerals and metals which …
because opencast mining doesnt require shafts and tunnels to be built unlike other approaches such as deep mining. it is on the surface so transportation costs from underground to ground level do ...
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 tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface.
Open Cut and Underground Mining | iMINCO. Open Cut Mining. There are many differences between open cut and underground mining. When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method.
This comparison is surprisingly simplistic and there are a number of incorrect statements. You might also start with the overall definition of mining; winning minerals. The differences between underground mining and opencast mining are largely technical and financial and the relative merits are based largely on these when deciding method to deploy.
Sep 06, 2006· Best Answer: An open cast is when it's a huge open area (with no roof, so you can look in and it lets the sun in), big enough to drive trucks around in. Like if the Grand Canyon was a mine. (Look up Kimberley's big hole for an idea) Open pit, is when it's actually smaller tunnels, and eventhough trucks or rail carts can sometimes go in there, it's always underground (Look up Johannesburg gold ...
The Differences Between Open Pit Mining And Open Cast ... » four main types of mining: dredging, surface mining, underground mining and insitu mining. » open pit vs closed pit mining » what is the difference between open ...
Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies.
In 2005, only 17% of metal mines were underground operations (Raw Materials Data, Stockholm 2010) – but there are many instances where underground extraction of minerals is more cost-effective than surface mining, typically when the given ore body is high grade or very deep.
Dec 09, 2012· Open-pit Mining, Opencast Mining, Open-cut Mining, Strip Mining …. Open-pit mining, also known as … countries are not likely to make a difference among an open-pit mine and other kinds of open-cast mines, …Underground Mining; … »More detailed
The modelling area included the central part of the deposit – underground mines and Aidu opencast.Intensity of water exchange depends on the length (L, km) and thickness (l, m) of the barrier left between the mines, difference between the water levels of neighbouring mines (dh, m) and...
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.
Open-pit Mining Open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow. The word is used to distinguish this type of mining from …
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