contour strip mining | coal mining | Britannica

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

what is contour strip mining Lisbdnet

31/12/2021· Contour mining is a version of strip mining that follows the contours of outcrops and hilly terrainsUsually, the mineral seam follows the contour of the outcrop, and the overburden is removed carefully along the seam in much smaller and custom shaped excavations rather than long strips

Coal Contour Surface "Strip" Mining Mine

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 Contour mining

Strip Mining an overview | ScienceDirect Topics

23 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 In contour or area stripping, the overburden is

CONTOUR MININGSTRIP MININGROOM & PILLAR MINING |

24/04/2020· COAL MINING; CONTOUR MININGSTRIP MININGROOM & PILLAR MINING; CONTOUR MININGSTRIP MININGROOM & PILLAR MINING 24042020; 557; 0; Notes Cover following topics Contour Mining, Strip Mining , Room & Pillar Mining Method, Shortwall Mining etc CLICK HERE TO DOWNLOAD NOTES FOR UNDERGROUND MINING

Commonly used mining techniques to extract coal ICSC

25/01/2018· 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 Area strip mining is commonly used on flat terrain to

Openpit Mining, Opencast Mining, Opencut Mining,

Almost everywhere there were surface mines Surface coal mining in the early twentieth century included contour mining, which removed the top layer of soil to get a coal seam 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

732: Contour Mining | ABC 123: Testing Site / Course

03/07/2010· Contour mining methods evolved to allow the economic extraction of coal using smaller and more agile equipment with more flexible mining patterns As with area mining, it is necessary to remove the vegetation and remove the overburden to gain access to the coal seam There are two ways to handle the removed overburden: haul it all the way down the hill and

Mining | Coal Mines

Auger mining is usually associated with contour strip mining With this method, the coal is removed by drilling auger holes from the last contour cut and extracting it in the same manner that shavings are produced by a carpenter’s bit Coal recovery rates approach 60 percent with this method The cutting heads of some augers are as high as 25 metres As each stem

Coal mining Wikipedia

Contour strip mining Definition | Law Insider

Define Contour strip mining means that stripmining method commonly carried out in areas of rough and hilly topography in which the coal or mineral seam outcrops along the side of the slope and entrance are made to the seam by excavating a bench or table cut at and along the site of the seam outcropping, with the excavated overburden commonly being cast down the slope below

CONTOUR MININGSTRIP MININGROOM & PILLAR MINING | Mine

24/04/2020· COAL MINING; CONTOUR MININGSTRIP MININGROOM & PILLAR MINING; CONTOUR MININGSTRIP MININGROOM & PILLAR MINING 24042020; 557; 0; Notes Cover following topics Contour Mining, Strip Mining , Room & Pillar Mining Method, Shortwall Mining etc CLICK HERE TO DOWNLOAD NOTES FOR UNDERGROUND MINING

Commonly used mining techniques to extract coal ICSC

25/01/2018· 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 Area strip mining is commonly used on flat terrain to

What is Strip Mining? Methods and Impact

17/01/2021· Contour Mining The contour method is used practically solely in the Appala­chian region of North America, where coal seams protrude from the sides of hills or mountains Contour mining entails making cuts on the

Environmental Effects Of Contour Coal Strip Mining

A renewed focus on federal support for coalrelated research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation

Coal Surface Mining Materials101

2 天前· In this mining method used in conjunction with the above methods primarily contour strip mining In this method, auger holes are drilled to extract the coal seam from the last contour cut To put it in prospective it is similar to

Coal mining Global Energy Monitor

19/04/2021· Strip mining Strip mining exposes coal by removing earth above each coal seam This earth to be removed is referred to as 'overburden' and is removed in long strips The overburden from the first strip is deposited in an area outside the planned mining area and referred to as outofpit dumping Overburden from subsequent strips is deposited in the void

Strip Mining: A Destructive Way of Coal Extraction

12/03/2017· Surface or strip mining damages and pollutes ecosystems to a great degree This is because by definition the process of strip mining involves striping away trees, plants and topsoil so that the coal can be accessed

Chapter 2: The Environmental Effects of Strip Mining The

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

STRIP MINING Coal Sales Online

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 Except for the first cut, overburden from each cut is

Strip Mining | Win Green Mining

26/09/2021· Area mining Contour Impacts of strip mining:Strip mining can cause water pollution When the loose topsoil is washed away it goes into rivers or streams The harmful chemical particulates pollutes the waterwaysStrip mining disturbes the underwater plant and animal lifeStrip mining causes air pollution as coal dust gets released in air and causes

Contour coal mining overburden as solid waste and its

An overview has been presented in an attempt to highlight some of the traditional problems of coal mining with specific focus on contour mining in mountainous regions This has served as a framework for viewing the need for additional information to more fully elucidate the total impact of strip mining on the environment Bits and pieces of information exist currently but the state of

Environmental Effects Of Contour Coal Strip Mining

A renewed focus on federal support for coalrelated research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation

CONTOUR MININGSTRIP MININGROOM & PILLAR MINING | Mine

Notes Cover following topics Contour Mining, Strip Mining , Room & Pillar Mining Method, Shortwall Mining etcCLICK HERE TO DOWNLOAD

While differentiating between Area strip mining and

29/12/2016· 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

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 • Removal of top soil

What Are the Different Types of Surface Mines? Coal Mining

07/08/2013· Strip mining is accomplished by two techniques, area stripping and contour stripping Where coalbeds are relatively flat and near the surface, as in much of the Western United States, area stripping is the dominant technique In area strip mining, overlying material is removed from a seam of coal in long, narrow bands, or strips, followed by removal of the

Pros and Cons of Strip Mining | APECSEC

25/02/2015· 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

waterways Contour Strip Contour strip mining is a method

waterways Contour Strip Contour strip mining is a method of Mountains may be Waterways contour strip contour strip mining is a School Jordan Matthews High School; Course Title SCIENCE HONOR; Type Homework Help Uploaded By macjrogers Pages 4 Ratings 100% (5) 5 out of 5 people found this document helpful; This preview shows page 1 3 out of 4 pages