contour strip mining coal mining

Contour strip mining is used mostly to mine coal on …

–Contour strip mining is used mostly to mine coal on hilly or mountainous terrain. • Mountaintop removal uses explosives, large power shovels, and huge machines called draglines to remove the top of a mountain and expose seams of coal. • Subsurface mining removes minerals from underground through tunnels and shafts. - Mining has harmful environmental effects • Scarring and disruption ...

(PDF) COAL MINING METHODS

Contour strip mining is a method of surface mining or in which bulldozers, power shovels, or stripping wheels are used to remov e large chunks of earth in terraced strips in order to extract coal

Economic Surface Mining of Multiple Seams

2010-10-2 · classified either as area or contour mining .. Area strip-mining is practiced on relatively flat terrain. A ''box cut'' is made through the overburden to expose the top coal seam. Successive parallel cuts ore then made and the overburden spoiled in the previous cut. Contour strip-mining is practiced 177

While differentiating between Area strip mining and ...

2016-12-29 · Area Strip mining and Contour mining are two types of surface coal mining techniques. Area strip mining is a type of mining used on a flat terrain. In this, 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 ...

Commonly used mining techniques to extract coal | ICSC

2018-1-25 · Contour strip mining and area strip mining are the two forms of strip mining, which is often used to extract coal and lignite. In contour strip mining, bulldozers or power shovels are deployed to take away huge amounts of ground material in terraced strips for extracting coal from a seam on a hill.

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. Phases of Contour Mining. • …

Coal Contour Surface "Strip" Mining

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

Contour strip mining | coal mining | Britannica

In 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.

Impacts of Contour Coal Mining on Streamflow, a …

The study of the effects of strip coal mining on the watershed hydrologic changes is a system cause-and-effect relationships problem. Watershed hydrologic processes are complex, and the addition of the strip mining factor adds to the complexity of the process.

Contour Strip Mining by Carissa Goddeau

2016-12-5 · Although there are many area strip mines in Wisconsin, contour strip mines are more common in mountainous areas It is much more efficient compared to underground mining Recovery rate for materials is higher; 80 to 90% of the material …

Strip Mining, Open-pit Mining, Surface Mining, Mining ...

2021-5-7 · Strip mining is a kind of surface mining. The ore is very near to the surface of the land but has one or more layers of rock and filth on top of it. ... Surface Mining Underground Mining Shaft Mining Contour Mining Drift Mining Sulfur Mining Mining FACTS. ... Lots of minute holes are drilled from the rock that is above the coal or mineral bed ...

Kentucky strip mining | The Pop History Dig

 · Strip Mining. Strip mining in Kentucky and elsewhere had gone on for decades before Harry Caudill arrived on the scene, but after World War II the technology had moved well beyond the "pick-and-shovel" stage. In eastern Kentucky especially, the practice of "shoot and shove" contour strip mining was notorious. Miners gouged into hillsides with mechanized shovels and dozers, establishing ...

STRIP MINING

2021-5-24 · Strip mining is accomplished by two techniques; area stripping and contour stripping. Where coal seams are relatively flat and near the surface. In area strip mining, the overlying material is removed from the seams of coal. Area strip mining is removed in long narrow bands, or strips, followed by removal of the exposed coal.

coal countur surface strip mining

Surface mining is classified as contour, area, open pit, and auger Contour mining is used in hilly or mountainous areas (primarily in the East) where the coal is recovered from a narrow contour strip, 50 to 100 feet wide, that follows the coal seam around the irregular topogrphy.

contour strip mining environmental impact

Coal mining and excavation sites also contribute to air pollution. Parallel lines represent the drive cut into the mountain (up to 1,200 feet (366 m) deep - 2015 records), without heading or corrective steering actuation on a navigation Azimuth during mining results in missing a portion of the coal seam and is a potential danger of cutting in pillars from previous mined drives due to ...

3 Methods of Coal Mining | WALLSCREENHD

2015-1-11 · Once coal is extracted, the topsoil is then replaced and native trees and vegetation is planted to restore the original condition. There are three different types of surface mining: contour, strip, and mountaintop removal mining. 1- Contour Mining: Contour Mining …

surface mining contour

Coal Contour Surface "Strip" Mining Mine Engineer . The Contour or Bench method of surface or strip mining is usually associated with coal, where a seam or multiple seams are located at a . Mineral Mine · Coal Information PageInquire Now; Hope Downs Iron Ore Mine Mining Technology.

Land Disturbance and Reclamation after Mining

1987-1-1 · In the USA, area and contour strip-mining are widely practised for coal gaining. In the areas where deposits are shallow, or there are seams of considerable width, there is less difficulty with reclamation to a satisfactory standard than where moisture is lacking, contour mining is required or high iron pyrite contents are encountered.

Chapter 2: The Environmental Effects of Strip Mining

2021-7-15 · The Mechanics of Strip Mining This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining, auger mining, …

Schissler AP (2004) 485-494 Coal Mining, Design and …

2020-9-24 · strip mining. 2.1 Contour Stripping Coal seams and associated overburden can outcrop on the edges of hills and mountains. Figure 3 shows a cross-section of a typical contour mine plan. Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour mining equipment includes a drill, loader ...

(PDF) Landscape Changes in the Southern Coalfields …

2021-7-17 · and its effects can compound those of legacy surface mining (e.g., strip mining or contour mining, auger mining, and highwall mining) [ 24 ]. Large-scale surface coal mining in WV started after ...

Coal Contour Surface "Strip" Mining

2001-12-9 · The Contour or Bench method of surface or strip mining is usually associated with coal, where a seam or multiple seams are located at a certain elevation or elevations through a mountain or hill. 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.

Open-pit Mining, Opencast Mining, Open-cut Mining, …

2021-7-15 · 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.

More than half of the U.S. coal mines operating in …

2019-1-30 · Contour strip mining accounted for more than half of the surface mine closures between 2008 and 2017. Open-pit coal mining is a combination of contour and area mining methods and is used to mine thick, steeply inclined coalbeds. In contrast to other forms of mining, open pit mines increased in number from 2008 to 2017, but production levels ...

Coal production using mountaintop removal mining …

2015-7-7 · Types of surface mining techniques include contour strip, area, open pit, and mountaintop removal. In mountaintop removal, entire coal seams running through the upper portion of a mountain are mined by removing all of the overburden (rock or soil overlying a mineral deposit), creating a level plateau or gently rolling contour.

advantages of strip mining coal

2016-7-26 · Contour Mining Flashcards Quizlet. Contour Strip Mining ed 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.

Strip Mining

Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the overburden is displaced, called spoil handling.

Chapter 2: The Environmental Effects of Strip Mining

2021-7-15 · This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining, auger mining, and mountaintop removal. Underground mining is also considered in this section. Terrain, economics, and custom generally dictate which technique an operator chooses.. All surface or strip mining first removes the overlying vegetation, soil and underground ...

"Impacts of Contour Coal Mining on Streamflow, a …

In order to promote stripped coal as an economically and environmentally acceptable fuel source, it is essential to assess properly the societal (external) cost of extracting coal by strip mining. One of the elements contributing to the damage function associated with the societal costs on the production side of extracting coal by means of stripping, is the change impacted on the watershed ...

Contour Highwall Mining

2021-7-12 · Contour Highwall Mining looks for new opportunities to help coal mining operations worldwide. By Chris Petersen. The energy market in the United States has been in a state of flux for the last few years as the federal government has attempted to focus on alternatives to traditional fuels like coal.

What is contour strip mining?

Strip mining, removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral. The common strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type.

Mining | Coal Mines

Contour strip mining Contour mining is commonly practiced where a coal seam outcrops in rolling or hilly terrain. Basically, the method consists of removing the overburden above the coal seam and then, starting at the outcrop and proceeding along the hillside, creating a bench around the hill.

What is Strip Mining? Methods and Impact | …

Surface mining is classified as contour, area, open pit, and auger Contour mining is used in hilly or mountainous areas (primarily in the East) where the coal is recovered from a narrow contour strip, 50 to 100 feet wide, that follows the coal seam around the irregular topogrphy.