what is contour mining

Strip Mining - an overview | ScienceDirect Topics

Surface mining operations experience some of the same issues as underground mining. Contour and area mining generates 0.24 and 1.2 tons of liquid effluents per 1000 tons of coal produced, respectively, as compared to 1.0 and 1.6 tons, respectively, for conventional and longwall mining operations (World Bank Group, 1998).

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How to make easy udon soup : porterpetcares.com

Contour Mining. COAL, one of the most important mineral has been valued for many purposes since 's and it has been used to generate electricity and. contour strip mining. Contour strip mining is used mostly to mine coal on hilly or mountainous terrain. core . area strip mining …

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Chapter 2: The Environmental Effects of Strip Mining - The ...

Contour Mining. The contour method is used almost exclusively in the steep Appala ­ chian region of the United States, where coal seams outcrop from the sides of hills or mountains. Contour mining makes cuts on the slope where the coal seam is located, to remove first the overburden and then the coal itself. Overburden from adjacent cuts is ...

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Contour Lines and Topo Maps - Greenbelly Meals

A detailed guide to contour lines, formations, drawings, hills and depressions. How to read and understand topographical maps for trails and hiking while backpacking or in a survival situation. Contour lines mark points of equal elevation on a map and are critical to …

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Open-pit Mining, Opencast Mining, Open-cut Mining, Strip ...

But after World War II surface coal mining was enveloped by auger mining, which is a normal part of contour operations. Surface mining was referred to as strip mining or stripping or sometimes as surface mining itself. They often failed to differentiate these different methods of mining.

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Pros and Cons of Strip Mining | APECSEC.org

Feb 25, 2015· Pros and Cons of Strip Mining. Feb 25, 2015. 0. 28590. Share on Facebook. Tweet on Twitter. For those who are unfamiliar, strip mining is a form of surface mining that focuses on the collection of tar sand and coal, which both rest somewhat close to Earth’s surface. Those who support strip mining point to the increased ease of access and all ...

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Topographic Maps for Mining Engineer

Few authors of treatises and papers on engineering subjects have given adequate attention to topographic maps. The statement applies especially to mining engineering in all branches. Even those who have discussed such maps have treated the subject only in a general way. Therefore it is proposed to outline in this paper a few of the uncommon yet important relationships which topographic maps ...

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Contour Strip Mining by Carissa Goddeau on Prezi

Carissa Goddeau & Avery DeBoer It is hazardous to human health Linked to birth defects, heart disease, and cancer in communities that are affected by fallouts Fallout contain millions of pounds of mining explosives, silica dust, and pulverized heavy metals It is harmful to the

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Mining | Definition of Mining at Dictionary.com

Mining definition, the act, process, or industry of extracting ores, coal, etc., from mines. See more.

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Surface Mining, Industry of Metals, Minerals, Precious ...

Surface mining is a form of mining in which the soil and the rock covering the mineral deposits are removed. It is the other way of underground mining, in which the overlying rock is left behind, and the required mineral deposits are removed through shafts or tunnels.. Surface mining is basically employed when deposits of commercially viable minerals or rock are found closer to the surface ...

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area strip mining Flashcards | Quizlet

area strip mining. type of surface mining used where the terrain is flat. an earthmover strips away the overburden, and a power shovel digs a cut to remove the mineral deposit. The trench is then filed with overburden and a new cut is made parallel to the previous one. ... contour strip mining.

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Contour Mining and Construction | General Contractor in ...

We are poised to forge a new standard in the mining and site development industries. Contour is headquartered in Columbia, South Carolina, and we are able to mobilize on any project in the Southeast. We are a licensed general contractor with unlimited status in South Carolina and North Carolina, and we are bonded for jobs in excess of $20,000,000.

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Definition of contour mining - mindat.org glossary

Definition of contour mining. Surface mining that progresses in a narrow zone following the outcrop of a coal seam in mountainous terrain, and the overburden, removed to gain access to the mineral commodity, is immediately placed in the previously mined area, such that reclamation is carried out contemporaneously with extraction. ...

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Contour strip mining | coal mining | Britannica

Other articles where Contour strip mining is discussed: auger mining: Augering is usually associated with contour strip-mining, recovering coal for a limited depth beyond the point where stripping becomes uneconomical because the seam of coal lies so far beneath the surface.

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Surface Mining Animation - YouTube

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...

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5 Chief Pros and Cons of Strip Mining – ConnectUS

Sep 24, 2015· 5 Chief Pros and Cons of Strip Mining. Sep 24, 2015 Aug 29, 2015 by Editor in Chief. Surface mining refers to a category of mining where soil and rock overlying the mineral deposit are removed. There are several types of surface mining, and strip mining counts as one of them.

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Contour Plots: Definition, Examples - Statistics How To

Dec 03, 2014· A contour plot is appropriate if you want to see how some value Z changes as a function of two inputs, X and Y: z = f(x,y). Types. The most common form is the rectangular contour plot, which is (as the name suggests) shaped like a rectangle.

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What is Strip Mining? (with pictures)

Nov 07, 2019· In contour strip mining, strips are dug out around the contours of a mountain, and miners must be more careful to avoid collapses and other problems which can cause injuries or deaths. As one might imagine from the description, strip mining can be extremely disruptive.

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Mountaintop Removal 101 > Appalachian Voices

Mountaintop removal is any method of surface coal mining that destroys a mountaintop or ridgeline, whether or not the mined area will be returned to what is legally described as the “approximate original contour.” Methods of mountaintop removal coal mining include, but are not limited to: cross-ridge mining, box-cut method mining, steep ...

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What Is Surface Mining? | Convergence Training

What Is Surface Mining? The Definition. So what’s the definition of surface mining? As stated by GreatMining.com, it’s: Surface mining is a form of mining in which the soil and the rock covering the mineral deposits are removed. It is the other way of underground mining, in which the overlying rock is left behind, and the required mineral ...

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Contour - definition of contour by The Free Dictionary

Define contour. contour synonyms, contour pronunciation, contour translation, English dictionary definition of contour. n. 1. a. The outline of a figure, body, or mass. See Synonyms at form. b. A line that represents such an outline. See Synonyms at outline. 2.

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What is Contour Farming? - YouTube

Feb 26, 2017· Made by H2Organisms P.S. Sorry for the low voice, it was my first ever youtube video I made a long time ago. :( It works fine with subtitles on though …

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Pros and Cons of Strip Mining - Vision Launch

Strip mining is a form of resource collection that involves dirt removal from a very large area to sift through it. Instead of working underground, a pit is created deep in the ground and all work is accomplished on the surface. Here are the pros and cons of strip mining to consider. Strip Mining …

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3 Technologies in Exploration, Mining, and Processing ...

The life cycle of mining begins with exploration, continues through production, and ends with closure and postmining land use. New technologies can benefit the mining industry and consumers in all stages of this life cycle. This report does not include downstream processing, such as smelting of ...

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Contour Mining Flashcards | Quizlet

Contour Strip Mining -used in areas where a coal seam outcrops on the side of a hill, but the economics do not permit the complete removal of the overburden -Mining proceeds along the outcrop in a strip or series of strips until the economic limit of stripping is reached

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Coal Contour Surface "Strip" Mining - Mine Engineer.Com

Contour mining allows for the extraction of coal from mountainous areas, where it is not feasible to extract the entire seam, using mountain top removal mining. Contour mining allows for the partial removal of the coal seam at the elevation of the coal seam. Quite often, contour mining is utilized in more than one location on the same mountain.

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Contour | Definition of Contour at Dictionary.com

Contour definition, the outline of a figure or body; the edge or line that defines or bounds a shape or object. See more.

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Surface Mining Control and Reclamation Act (SMCRA, US ...

Oct 14, 2014· Small mining operations, those that produce less than 100,000 tons per year, were exempt from the provisions of the Act. The reclamation portion of the Act requires mining operators to return the mined area to its “approximate original contour.”

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Contour Blasting | Article about Contour Blasting by The ...

Contour Blasting a method of blasting in which the actual profile of underground mine workings or excavations is as close as possible to the projected profile, with preservation of the surrounding rock. It is used in mining during the development stage and in hydraulic-engineering and transportation construction during the building of tunnels and ...

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Surface mining - Wikipedia

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.

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