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Unformatted text preview: 4.0/ 4.0 Points What is a critical difference between surface and subsurface mining?A.Surface mining is more expensive than subsurface mining B.Surface mining is above ground; subsurface mining is below ground C.Surface mining causes less environmental damage than subsurface mining D.Subsurface mining creates acid mine drainage; surface mining does not .
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.
What is a critical difference between surface and subsurface mining? A) Surface mining is more expensive than subsurface mining B) Surface mining is above ground; subsurface mining is below ground C) Surface mining causes less environmental damage than subsurface mining D) Subsurface mining creates acid mine drainage; surface mining does not
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels.. Surface mining began in the mid-sixteenth century [dubious ...
Sep 19, 2015· Surface mining does more damage to the environment than subsurface. Surface mining creates more of a mess then subsurface or open cut mining. ... The difference between surface run-off and ...
Opencast Mining or quarrying of minerals is easier than mining by underground methods. During Quarrying the alluvium and rocks below which the minerals lie,are removed and dumped,in the initial stages, in a place which is not required for quarryin...
LITE Pg 368 #4-5 - John Caviness - Google. Feb 24, 2014 ... Define ore and distinguish between a high-grade ore and a low-grade ore. ... Distinguish between surface mining and subsurface mining.
Nov 19, 2016· There is a lots of difference between surface mining and subsurface mining,here i am starting with the basic definition below:- SURFACE MINING-When the ore or mineral is present on near surface or shallow depth then excavation is carried out on th...
Mining activities can be broadly divided in two types 1. Underground mining 2. Surface mining Now let's talk about surface mining Depending on the topography, nature of the strata, working conditions, depth of the deposit and future use of the lan...
Apr 30, 2017· -- Created using PowToon -- Free sign up at -- Create animated videos and animated presentations for free. PowToon is a free ...
Apr 07, 2017· 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.
Unformatted text preview: 4.0/ 4.0 Points What is a critical difference between surface and subsurface mining?A.Surface mining is more expensive than subsurface mining B.Surface mining is above ground; subsurface mining is below ground C.Surface mining causes less environmental damage than subsurface mining D.Subsurface mining creates acid mine drainage; surface mining does not E.Subsurface ...
Apr 15, 2018· Different methods of surface and subsurface mining Алексей Березин ...
What is the difference between underground mining and surface mining? ... Surface mining does more damage to the environment than subsurface. Surface mining creates more of a mess then subsurface ...
a) The difference between surface and subsurface mining is that surface mining is on the Earth's surface and moves the un-needed materials out of the way in order to obtain the desired minerals and energy. Subsurface mining doesn't remove the un-needed soils or rock out of the way instead it uses big machines to dig deep underground into ...
Sep 19, 2010· Surface mining is safer and easier than subsurface mining. Surface mining does more damage to the environment than subsurface. Surface mining creates more of a mess then subsurface or open cut mining.
Feb 23, 2018· As mining progressed, the ore deposits began running out, making it necessary to seek them deeper inside the ground. This historical event highlights the difference between two techniques of mining which are used even today - surface and subsurface mining. Let us .
Strip mining is sensible when the ore body is near the surface. The practice includes some of the largest machines on earth, removing long strips of overlying soil and rock and then removing coal deposits. Open-pit mining utilizes blasting and mineral removing, .
Subsurface mining is the removal of deposits from the earth by drilling underneath layers of rock and dirt. These deposits are difficult to reach from the surface and require the drilling of vertical or horizontal shafts for access.
Jan 20, 2014· See what Vermeer surface mining equipment can do for you. - Patented tilting capability - Vertical wall capability - Mine in layers - Selective piling - Sele...
Surface mining techniques don't work for extracting all valuable geologic resources. Diamonds and most metal ores, including gold, require extensive subsurface mines to access the rocks with these resources in them. Subsurface mines are probably what you envision when you think of mining: systems of tunnels and vertical shafts with elevators to take miners underground [.]
The environmental damage caused by surface mining is related to the large amount of surface material that humans remove during mining operations. The environmental effects of surface mining include Habitat destruction Soil erosion Air pollution from dust particulates Pollution (especially from sediments) All surface mining techniques negatively affect the environment, though some methods are ...
Jun 14, 2013· Mining techniques can be divided into two broad categories: surface mining and subsurface mining (See Figure 1). Surface mining consists of stripping soil and vegetation away and possibly a limited amount of rock and then removing ore in large quantities. Conversely, subsurface mining involves sinking a mineshaft and digging tunnels to reach a ...
Distinguish between surface and subsurface mining, between open-pit and strip mines, between shaft and slope mines. Surface mining is the extraction of mineral and energy resources near Earth's surface by first removing the soil, subsoil, and over-lying rock strata. Subsurface mining is the extraction of mineral and energy resources from deep ...
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