what is coal minning layman engish

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what is coal minning layman engish

COAL | meaning in the Cambridge English Dictionary

coal definition: 1. a hard, black substance that is dug from the earth in pieces, and can be burned to produce heat or power, or a single piece of this: 2. a hard, black substance that is dug from the earth in lumps and used as a fuel, or a single piece of this substance: . Learn more.

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Coal mining | World Coal Association

Coal mining is only a temporary use of land, so it is vital that rehabilitation of land takes place once mining operations have stopped. In best practice a detailed rehabilitation or reclamation plan is designed and approved for each coal mine, covering the period from the start of operations until well after mining …

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What Are the Qualifications to Be a Coal Miner? | Chron.com

The first step to becoming a coal miner is to obtain the necessary education, which includes completing a training course approved by the Mine Safety and Health Administration. New underground miners must receive a minimum of 40 hours of instruction, with 32 hours of the training in the classroom and eight hours at a mine site.

Coal mining definition and meaning | Collins English ...

a reddish-brown, grey, green, blue, or colourless hard mineral consisting of zirconium silicate in tetragonal crystalline form with hafnium and some rare earths as impurities .

Coal mining in the United Kingdom - Wikipedia

Coal mining in the United Kingdom dates back to Roman times and occurred in many different parts of the country. Britain's coalfields are associated with Northumberland and Durham, North and South Wales, Yorkshire, the Scottish Central Belt, Lancashire, Cumbria, the East and West Midlands and Kent.After 1970, coal mining quickly collapsed and practically disappeared in the 21st century.

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Coal mining | Britannica.com

Coal mining: Coal mining, extraction of coal deposits from the surface of Earth and from underground. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th

Glossary of Mining Terminology - Glace Bay

Glossary of Mining Terminology After Damp - Gasses resulting from underground combustion, normally carbon monoxide. This is a loose term implying any fatal gas in a mine after an explosion or fire.

Coal Miners

Coal mining is a dangerous job requiring skill and judgment. In the hand-loading era, an underground miner's workplace, usually called a "room," was only as high as the coal seam. A room in the Pocahontas seam could be more than 10 feet high, while workplaces in the Kanawha and New River seams often were no taller than four feet.

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what is coal mining layman engish. coal - Dizionario inglese-italiano WordReference. When weighing the cost of burning coal, one should consider not only the impact of burning coal but also the impact of coal mining on the environment, local communities and the miners themselves. ⓘ This sentence is not a translation of the original sentence. ...

Glossary of Mining Terms - rocksandminerals.com

In coal mining this is the intended basis for roof bolting. Bearing — A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. The meridian is an established line of reference. Azimuths are angles measured clockwise from any meridian.

PA Mining History

Room-and-pillar with retreat mining is a high-extraction mining method, generally recovering greater than 70% of the target coal seam. Anthracite Coal. Anthracite coal is often described in layman's terms as 'hard coal' and while it is heavily metamorphosed and almost pure carbon, it is no harder or softer than bituminous, or 'soft' coal.

coal process - eduvijf.nl

Coal Combustion and Gasification Products - Journal - Coal Combustion and Gasification Products is a unique peer-reviewed journal designed specifically to communicate coal …

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What is coal? | World Coal Association

Coal is a fossil fuel and is the altered remains of prehistoric vegetation that originally accumulated in swamps and peat bogs. The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago.

Coal Mining and Processing | Energy Trends Insider

Coal Mining and Processing. Mining the Coal. ... In surface mining, giant machines remove the top-soil and layers of rock to expose large beds of coal. Once the mining is finished, the dirt and rock are returned to the pit, the topsoil is replaced, and the area is replanted. The land can then be used for croplands, wildlife habitats, recreation ...

Mining terms explained: A to Z – Anglo American

Longwall mining – a form of underground coal mining where a long wall of coal is mined in a single slice. Metallurgy – the art of working metals, especially extracting them from their ores. Mine value chain – the entire mining process, from the moment the potential of an area is identified to the day product is delivered to customers.

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Coal mining definition and meaning | Collins English ...

Coal mining definition: the act, process, or industry of extracting coal from the earth | Meaning, pronunciation, translations and examples

proof of work - What exactly is Mining? - Bitcoin Stack ...

mining is doing the work of finding nonce so that sha256(sha256(data+nonce)) < difficulty where nonce is an integer number the miner chooses freely (this choosing of the nonce and checking if the condition ( < difficulty ) is met comprises the work

Coal | Definition of Coal at Dictionary.com

Coal definition, a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. See more.

Glossary of Mining Terms - Coal Education

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

Coal - Simple English Wikipedia, the free encyclopedia

Coal-fired power stations produce 37% of the world's electricity. Compared to other non-renewable sources of energy, coal is non-efficient and produces high amounts of greenhouse gases. Yet, coal is commonly found and cheap but the more mining of coal has made finding coal …

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Coal mining - Wikipedia

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine a pit, and the ...