what is the meaning of coal mining

Coal Mining Safety and Health Act 1999

Coal Analysis - The determination by chemical methods of the amounts of various components of coal. Coal Ash - Non-combustible material in coal. Coal Bank - Exposed seam of coal. Coal Basin - A coal field with a synclinal basin structure. Coal Bump - Sudden outbursts of coal and rock that occur when stresses in a coal pillar,

Coal mining - Choosing a mining method | Britannica

Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many …

What is Underground Mining? (with pictures)

ham in yer bucket : an expression meaning you've got a good or full lunchbox. Comes from the mining days when ham for lunch was a treat. hard coal : the Anthracite Coal that the coal region of Eastern Pennsylvania is famous for. Bituminous, or "soft coal" is mined in Western Pennsylvania.

CoalSpeak: Dictionary of the Coal Region

This type of mining is the traditional method of underground mining used in Pennsylvania and can result in as much as 75% recovery of the target coal seam. Longwall Mining : A mechanized coal shearer is mounted between a conveyer system and a series of self-advancing hydraulic roof supports.

What is rat hole mining? - eNotes.com

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.

What is Coking Coal - Aspire Mining Limited

Jun 23, 2020· Wyoming's coal mining industry lost 20% of its customer base in the past 10 years and will lose another 23% over the next 10 years as the nation's fleet of coal-fired power plants continues to shrink, according to a report by the University of Wyoming and Montana-based Headwaters Economics. The same trend applies to coalfields in Appalachia ...

What does coal mining mean? - definitions

Definition of coal mining in the Definitions.net dictionary. Meaning of coal mining. Information and translations of coal mining in the most comprehensive dictionary definitions resource on the web.

Coal definition and meaning | Collins English Dictionary

coal mining definition: 1. the business, job, or process of removing coal from the ground: 2. the business, job, or…. Learn more.

Coal mine - definition of coal mine by The Free Dictionary

coal mine definition: 1. the deep hole or system of holes under the ground from which coal is removed 2. the deep hole or…. Learn more.

Urban Dictionary: Coal Mine

A coal seam is a dark brown or black banded deposit of coal that is visible within layers of rock. These seams are located underground and can be mined using either deep mining or strip mining techniques depending on their proximity to the surface. These seams undergo normal coal formation and serve as a conventional coal resource.The reserves of coal are immense, and are the largest of all of ...

Types of Coal Mining - FEECO International Inc.

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

COAL MINING | meaning in the Cambridge English Dictionary

coal mining: Prospecting and exploration The fundamental objective of coal prospecting is to discover coal resources through a search. In areas where coal mining has not been previously practiced, the search process should result in obtaining coal samples that give reasonable evidence of …

Underground Coal Mining - Pennsylvania DEP

Dec 11, 2020· Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them. This is in contrast with techniques like open pit mining, in which the surface layers of ground are scooped away to access deposits, or mountaintop removal, in which the top of a mountain is simply shaved off to access the ore inside.

What does coal mining mean? - definitions

braitch hole : abandoned coal mine tunnel. Sometimes called an 'airhole'. "Be careful when yiz are walkin upda mountain so yiz dont fall in a braitch hole and get kilt!" breaker : a huge building used to process (i.e. "break up") newly mined anthracite coal. There are a number of coal breakers (most of which are abandoned) dotting the region.

Coal | National Geographic Society

Mining the Coal. Coal miners use giant machines to remove coal from the ground. They use two methods: surface or underground mining. Many U.S. coal beds are very near the ground's surface, and about two-thirds of coal production comes from surface mines. Modern mining methods allow us to easily reach most of our coal reserves.

Coal Mining | Definition of Coal Mining by Oxford ...

Mining is the extraction of valuable minerals or other geological materials from the earth, usually from an orebody, lode, vein, seam, reef or placer deposit.These deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.

What does coal mining mean? - definitions

Coal mining main article. Strip mining: This method allows for the extraction of 60% of the worlds coal in the present time. A thin upper layer of rock (usually just a few 10's of meters) is removed to expose coal reservoirs 50-100 meters thick.These reservoirs of coal are referred to as coal seams.One of the world's largest coal seams is in Wyoming, in the Powder River Basin.

CoalSpeak: Dictionary of the Coal Region

Jan 23, 2014· Rat hole mining is a term used in coal mining and is so named because of its name during colonial times, the sistema del rato, and because of …

Glossary of Mining Terminology - Miners' Museum

Coal mining, extraction of coal deposits from the surface of Earth from underground. Coal has been used since the Bronze Age, 3,000 to 4,000 years ago, and was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries.

What Is Coal Mining - Some Interesting Facts

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

What is Mining? - Geology In

Nov 10, 2019· Contents Coal Mining Safety and Health Act 1999 Page 2 22 Meaning of geographically separated . . . . . . . . . . . . . . . . . . . . . 25 23 Meaning of physical ...

Coal | Definition of Coal at Dictionary.com

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.

Glossary of coal mining terminology - Wikipedia

Dec 22, 2012· Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity.It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel in the United States.

CoalSpeak: Dictionary of the Coal Region

Definition of coal mining in the Definitions.net dictionary. Meaning of coal mining. Information and translations of coal mining in the most comprehensive dictionary definitions resource on the web.

Coal mining definition and meaning | Collins English ...

When it comes to mining coal, there are two processes by which coal can be removed from the ground: surface mining, or underground mining. In Australia, the majority of coal mining is done via the opencast method, although often the method of choice is dependent on certain characteristics of the coal deposit 1.. The opencast, also referred to as the open-pit method, is the ideal technique when ...

Prospecting | mining | Britannica

2 · Coal definition: Coal is a hard black substance that is extracted from the ground and burned as fuel. | Meaning, pronunciation, translations and examples