Strip mining | Britannica.com

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 ...

What is Strip Mining? (with pictures) - wisegeek.com

APES Chapter 14. STUDY. PLAY. area strip mining. In area strip mining, used where the terrain is fairly flat, gigantic earthmovers strip away the overburden, and power shovels—some as tall as a 20-story building—remove the mineral deposit. contour strip mining.

Strip Mining - an overview | ScienceDirect Topics

Another factor that is considered when determining the economics of strip mining is the stripping ratio, which is the ratio of overburden thickness to coal seam thickness. Typically, the maximum stripping ratio that is economical is 20 to 1 [4]. The two general methods of strip mining are area mining and contour mining.

Tutorials/Mining – Official Minecraft Wiki

Quarry Mining is very similar to strip mining, sharing the prospect of taking all resources within an area. These mining methods are used very commonly in Minecraft. The difference between quarrying and strip mining is that the process of quarrying involves a large rectangular or square strip, continually mined downwards with a staircase ...

Surface Mining Control and Reclamation Act of 1977 - Wikipedia

Surface Mining Control and Reclamation Act of 1977; Long title: An Act to provide for the cooperation between the Secretary of the Interior and the States with respect to the regulation of surface coal mining operations, and the acquisition and reclamation of abandoned mines, and for other purposes.

How to use strip mining in a sentence - WordHippo

Coal mining methods, particularly mountaintop removal and strip mining, have negative environmental impacts, and offshore oil drilling poses a hazard to aquatic organisms. By 1920, the use of draglines and other modern equipment made strip mining possible and the privately owned Grand Lake area mines produced over 200,000 tons per year.

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 ...

Effects Of Mining on the Environment and Human Health

Apr 20, 2015· Impacts of strip mining: Strip mining destroys landscapes, forests and wildlife habitats at the site of the mine when trees, plants, and topsoil are cleared from the mining area. This in turn leads to soil erosion and destruction of agricultural land. When rain washes the loosened top soil into streams, sediments pollute waterways.

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

What Is a Box Cut? (with picture) - wisegeek.com

Jun 26, 2019· In basic strip or surface mining, workers start by using a dragline excavator to create a box cut along the length of the site. The earth and rocks removed from this cut are set aside above ground for later reuse. Workers then enter the trench created by the box cut and mine all available minerals and ore. Once the trench has been stripped, the ...

"Giant Shovel on I-70"Ohio Strip Mine Fight: 1973 | The ...

May 31, 2017· Voneida didn't like what he saw, and was amazed at what the strippers were doing to the land and communities. He began gathering documentation of strip mining's impacts in the area – measuring water pollution, taking photographs, and generally chronicling what was going on there.

Strip Mining vs Open pit mining : mining - reddit.com

Strip mining is for shallow, mostly horizontal deposits, usually extended over a considerable area. You remove the overburden, take the ore/coal and move another step in. Behind you, land reclamation can begin relatively soon. As such, the 'mine' moves across the land over time. Open pits are for deposits that are tilted or even vertical.

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

Following scalping of the vegetation and topsoil removal, area mining begins with an initial rectangular cut (called the box cut). Area strip mining with concurrent reclamation. The operator places spoil from the box cut on the side away from the direction in which mining will progress.

Plundering Appalachia - The Tragedy of Mountaintop-Removal ...

Mountaintop removal is strip-mining on steroids. Massive dump trucks, huge bulldozers, and ten-story-high draglines can undo in months what geological processes took millions of years to build. Typically, multiple coal seams are exposed as a mountaintop-removal operation dismantles the …

Mountaintop Removal Coal Mining Ends on March 16 - EcoWatch

Fourteen months after the world watched in astonishment as poorly regulated coal-washing chemicals contaminated the Elk River in West ia, coal country residents and supporters are gearing up for an epic showdown on March 16 with the state's Department of Environmental Protection—and the U.S. Congress—over the mounting death toll and health crisis from mountaintop removal strip mining.

Pros and Cons of Strip Mining | APECSEC.org

Feb 25, 2015· Strip mining can have unwanted effects on the natural ecosystem of the area where the mining is taking place. Plant and animal life is often killed off, taking years to regenerate. In addition to the death of plants and animals, the land also experiences increased susceptibility to …

Surface mining - Wikipedia

"Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden).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.

What is STRIP MINING? What does STRIP MINING ... - YouTube

Apr 06, 2017· "Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden). It is most commonly used to mine coal and lignite (brown coal).

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

participate effectively in controlling the abuses of strip mining, it is important to understand the basic techniques of surface mining and the types of environmental damage that can result. The Mechanics of Strip Mining This section describes the five main types of surface coal mining techniques: area mining, open pit mining, contour mining ...

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

Strip mining, like other types of surface mining, finishes in hurting the area around the mine. The rock, gravel, trees, plants, and filth are dumped in regions round the mine. When it rains, this runs over the land and into watercourse and rivers. The rain pushes the mine filth on top of the region topsoil and buries it.

The footprint of coal - SourceWatch

Pre-1977 data: In 1977, a representative of the U.S. Army Corps of Engineers testified at the House hearings on the Surface Mining Control and Reclamation Act that more than 4.4 million acres of land had been disturbed by surface mining in the United States, according to a National Strip Mine Study prepared by the Corps. The Army Corps ...

Minecraft: SUPER EFFICIENT STRIP-MINE! (1.11.2 Tutorial ...

Apr 14, 2017· ––– Description ––– Welcome back to another episode of Minecraft. Today I show you a tutorial on how to make a very efficient strip mine! Discord Community...

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

Types of surface mining . Strip mining: ... This method of striping is common on flat land to extract the mineral over a large area. Open-pit mining: This type of mining involves the extraction of rock or minerals from the earth by forming an open pit. This process differs from the other method which requires digging into the earth.

Coal Controversy In Appalachia - NASA Earth Observatory

Large areas of West ia have been affected by mountaintop removal mining (light red), and additional areas have been permitted but not yet mined (blue). The outlined area contains some of the state's largest mines, including the Hobet-21 Mine and the Kayford Mine, each of …

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. asthenosphere.

Strip Mining | Encyclopedia.com

Hillside mining such as this is called "contour mining," in contrast to "area mining" on relatively flat terrain. In the latter, the number of rows are limited mostly by contractual arrangements. Consequently, the main difference between area and contour strip mining are the number of …

5 Chief Pros and Cons of Strip Mining – ConnectUS

Sep 24, 2015· Usually, strip mining is employed in mining tar sand and coal. It's a method referred to as open cast, open cut or stripping. First, the trees, shrubs and other structures in the area to be mined are removed – a task accomplished with heavy duty bulldozers.

Area strip mining | Britannica.com

Other articles where Area strip mining is discussed: coal mining: Mining methods: …(1) contour strip mining, (2) area strip mining, (3) open-pit mining, and (4) auger mining.