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strip mining process

Strip mining Britannica

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. The cycle of operations for both techniques consists of vegetation clearing, soil removal, drilling and blasting ofget price

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Strip Mining an overview ScienceDirect Topics

The strip mining process is suitable for fairly flat, shallow, single-seam coal, lignite, and other bedded deposits. The mineral layer is covered by an even thickness of overburden composed of soft top soil and weathered rocks in succession. The soft and unconsolidated overburden can be stripped and removed by dragline or shovel to expose aget price

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What is Strip Mining? (with pictures) wiseGEEK

Strip mining is a mineral-extraction process in which a layer or seam of undesired material (called “overburden”) is removed from the surface of an area to allow efficient access to a desired material existing underneath the layer being stripped. As the process suggests, it is a form of surface mining, and it is primarily used to extractget price

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What Is Surface Mining? Convergence Training

Jun 24, 2017· Strip Mining. Strip mining is the process of removing a thin strip of overburden (earth or soil) above a desired deposit, dumping the removed overburden behind the deposit, extracting the desired deposit, creating a second, parallel strip in the same manner, and depositing the waste materials from that second (new) strip onto the first strip.get price

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Surface mining Wikipedia

There are five main forms of surface mining, detailed below. "Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as "overburden removal". It is most commonly used to mine coal and lignite (brown coal). Strip mining is only practical when the ore body to be excavated is relatively near the surface. This type of mining uses some of the largest machines on earth, including get price

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STRIP MINING definition in the Cambridge English Dictionary

strip mining meaning: 1. a method of obtaining substances such as coal from the ground that involves removing the top. Learn more.get price

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Surface mining Britannica

mining: Surface mining It has been estimated that more than two-thirds of the world’s yearly mineral production is extracted by surface mining. There are several types of surface mining, but the three most common are open-pit mining, strip mining, and quarrying.get price

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

Strip Mining. 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. To mine the ore, these layers have to be removed. The steps in strip mining are similar to open-pit mining.get price

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Pros and Cons of Strip Mining APECSEC

Feb 25, 2015· 2. Strip Mining Is Faster Most other mining techniques require the digging of tunnels, which adds additional time to the process. Strip mining does not rely on the digging of tunnels and since the route to the surface is much shorter, this also cuts down on the amount of time spent.get price

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Chapter 2: The Environmental Effects of Strip Mining The

THE. ENVIRONMENTAL. EFFECTS OF. STRIP MINING A ll mining operations have a disruptive effect on the environment, but the sheer volume of material involved in strip mining makes the impact on the environment especially acute. Surface mining (another name for "strip mining") can severely erode the soil or reduce its fertility; pollute waters or drain underground water reserves; scar or altar theget price

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Surface Mining Techniques used in the Oil Sands Oil

SURFACE MINING ≠ STRIP MINING: Although sometimes mistakenly referred to as strip mining, oil sands is actually mined from an open-pit below several meters of overburden.Strip mining is the mining of a relatively flat deposit very close to the surface, commonly used in coal or phosphate industries.get price

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Basic Information about Surface Coal Mining in Appalachia

After mining. On the right side, the same watershed is shown after the mountain rock layers have been removed, crushed, and deposited in the stream valley. Flat surfaces of remaining rock layers are less permeable, producing higher surface runoff into a flood control get price

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Obama Ends 150-Year War of Strip-Mining in 24 States! Grist

Apr 01, 2010· The full-scale launch of strip mining–the process of clear-cutting the forests and dynamiting or detonating explosives across the landscape get price

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Surface Coal Mining

Strip Mining: Layers of soil and rock overburden are removed the coal exposed coal seam is excavated. The area is then backfilled, regraded, and replanted during the reclamation process. Highwall Mining: An outcrop of coal is removed by traditional excavators, or by using auger miningget price

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“Giant Shovel on I-70”Ohio Strip Mine Fight: 1973 The

May 31, 2017· There were three of the giant machines at issue: The Tiger, The Mountaineer, and The GEM of Egypt.All three were then in the service of the Hanna Coal Company, which by 1970, had been strip mining in Ohio for decades and was then a division of the much larger Pittsburgh Consolidation Coal Company, later known as “Consol,” itself then owned by Continental Oil.get price

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Open Pit Mining Techniques|Surface Mines|Rock or Mineral

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 get price

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Kentucky was devastated for decades by mountaintop

Feb 13, 2020· For 25 years, he oversaw the process that may represent humans’ best attempt to date at total annihilation of land: strip-mining and mountaintop-removal mining of get price

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The Environmental Science of Surface Mining dummies

Strip mining. Strip mining, as the name describes, is a process of removing rock and soil in strips to get to the valuable mineral ores below.After miners extract the resources, they put back the leftover rock and soil, called mining spoils or tailings, to fill in the hole.. One way to replace tailings is to simply dump them; luckily, U.S. regulations require mining companies to replaceget price

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Bauxite The Aluminum Association

During the strip-mining process, bauxite is broken up and taken out of the mine to an alumina refinery. Once mining is complete, the topsoil is replaced and the area undergoes a restoration process. When the ore is mined in forested areas, an average of 80 percent get price

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Chapter 2: The Environmental Effects of Strip Mining The

THE. ENVIRONMENTAL. EFFECTS OF. STRIP MINING A ll mining operations have a disruptive effect on the environment, but the sheer volume of material involved in strip mining makes the impact on the environment especially acute. Surface mining (another name for "strip mining") can severely erode the soil or reduce its fertility; pollute waters or drain underground water reserves; scar or altar theget price

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Skull Creek may be site of new open pit mine Rio Blanco

Open pit mining differs slightly from strip mining. “Strip mining is the process of mining a seam of mineral by removing a long strip of overlying soil and rock. Strip mining is a practical type of mining when the ore body that is to be extracted is near the surface.get price

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Surface Coal Mining

Strip Mining: Layers of soil and rock overburden are removed the coal exposed coal seam is excavated. The area is then backfilled, regraded, and replanted during the reclamation process. Highwall Mining: An outcrop of coal is removed by traditional excavators, or by using auger miningget price

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The Environmental Science of Surface Mining dummies

Strip mining. Strip mining, as the name describes, is a process of removing rock and soil in strips to get to the valuable mineral ores below.After miners extract the resources, they put back the leftover rock and soil, called mining spoils or tailings, to fill in the hole.. One way to replace tailings is to simply dump them; luckily, U.S. regulations require mining companies to replaceget price

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Kentucky was devastated for decades by mountaintop

Feb 13, 2020· For 25 years, he oversaw the process that may represent humans’ best attempt to date at total annihilation of land: strip-mining and mountaintop-removal mining of get price

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5 Pros and Cons of Strip Mining Flow Psychology

The process of strip mining is a controversial one because it is believed to be an efficient process but it also raises concerns about the destruction of the natural ecosystem. List of Pros of Strip Mining. 1. It is much more efficient compared to underground mining techniques.get price

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Open Pit Mining an overview ScienceDirect Topics

Strip mining is the process of mining a seam of mineral by removing a long strip of overlying soil and rock. Strip mining is a practical type of mining when the ore body that is to be extracted is near the surface. Open-pit mining is the process of extracting rock or minerals from the earth through their removal from an open pit or borrow.get price

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Bauxite The Aluminum Association

During the strip-mining process, bauxite is broken up and taken out of the mine to an alumina refinery. Once mining is complete, the topsoil is replaced and the area undergoes a restoration process. When the ore is mined in forested areas, an average of 80 percent get price

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Stripping Ratios: What are They and Why are They Important

A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also known as overburden, that must be moved inget price

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Returning Mined Land to Productivity Through Reclamation

For example, since the passage of the 1977 Surface Mining Control and Reclamation Act (SMCRA) in the U.S., direct fees have been collected by government agencies from existing coal mining companies. Various states and Native American tribes have used over US$4.06 billion of those funds to reclaim almost “240,000 acres of hazardous highget price

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What Are the Pros and Cons of Strip Mining? (with pictures)

Aug 09, 2020· Andrea Cross Last Modified Date: August 09, 2020 . Strip mining is a form of surface mining that is usually employed for the recovery of materials such as coal and tar sand, which are relatively near the surface of the earth. Surface vegetation, soil, and rocks are removed in strips, often in conjunction with controlled explosions, to make removal more efficient.get price

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Mining 102 EVE University Wiki

Nov 22, 2019· Mining Barges Can fit strip miners and ice harvester turrets all require Mining Barge-1 and Astrogeology-3 skills Procurer focus is on tank Output: moderate producer, with a 2% reduction in Strip Miner and Ice Harvester duration per level of Mining Barge skill.get price

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Surface Coal Mining Methods in Australia

Strip mining is ideally applied where the surface of the ground and the ore body itself are relatively horizontal and shallow and where a wide area is available to be mined in a series of strips (Westcott, 2004). Table 2 provides some examples of the Australian surface coal mines. Figure 3 illustrates a typicalget price

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Phosphate Mining

The Mining Process. Strip mining for phosphate rock violently transforms the environment, irreparably changing the character of the natural landscape. In many cases mines displace species and eat up thousands of acres of valuable habitat that are impossible to truly restore to their natural state. In Florida habitat loss is a significant issueget price

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