Coal (fuel source)

Methane layering in underground coal mining refers to the presence of methane gas accumulating in layers within coal seams. This buildup of methane poses a significant safety hazard as it can lead to explosions if ignited. Effective methane monitoring and control techniques are essential in coal mining to prevent such incidents.

Coal is not a intrusive igneous rock but is instead a form of Carbon. The carbon is heated and pressured from low grade metamorphism. Coal is formed mostly from marshes or swamps millions of years ago, think of an environment like the everglades in Florida. A igneous rock would be something like a gabbro or granite.

Coal is removed from deep underground through a process called underground mining. This involves digging shafts into the ground, then using machinery to extract the coal from the coal seam. Miners then transport the coal to the surface for processing and distribution.

First of all coal is not an unusual sedimentary rock, it is very abundant for the time being. The following is a tutorial from the supplied web site:

Coal is clearly made up of lots of compressed bits of dead plants. But when we walk around in the world we usually see old bits of wood and leaves decaying and rotting away (that is, getting eaten by bacteria, insects, and all sorts of organisms involved in decay and recycling of organic matter). For thick layers of plant stuff to get fossilized as coal, something must be going on.

Coal Formation starts with accumulation of organic matter (bits of dead plants) in a low oxygen setting such as a peat bog. The organic matter accumulates and forms a bed of peat. The peat bed gets buried by other sediments and under heat and pressure begins to transform to a low grade coal - a Lignite. More heat and pressure further metamorphose the lignite into Bituminous coal. Even more heat and pressure metamorphose the bituminous coal into a nice hard shiny Anthracite.

Coal is usually classified into three grades: Lignite, brown coal; Bituminous coal, soft coal; and Anthracite, hard coal. Anthracite is dense, nice and hard, and shiny.

The first step in the formation of coal is the accumulation of plant debris in low oxygen conditions, such as in this damp low spot on a moor. Peat exposed to heat and pressure from burial beneath other sediments becomes compressed and chemicaly changes into low grade coals such as this lignite, and under further heat and pressure is converted to higher grade coals. The pressure from overlying sediments that bury a peat bed will compact the coal. Peats transform to low grade lignites when they are compressed to about 20% of their original thickness. Lignite typicaly transforms to bituminous coal as it is compressed further and heated to between 100 and 200°C. This drives much of the water and other volitiles from the coal. Longer exposure to elevated temperature will further drive volatiles from the coal, and drive chemical reactions that produce anthracite. Anthracite coals are typicaly compressed to 5-10% of the orginal thickness of the peat bed, and contain less than 10% water and other volatiles.

Coal beds are layers of hardened plant material that have been compressed over millions of years underground. These beds are rich in carbon and are one of the main sources of coal used for energy production. Coal beds are often found in sedimentary rock formations.

Coal is found in various places like underground. It is mainly found in the crust but very rarely found in the mantel.

The method used to extract shallow deposits of coal from the earth is surface mining, specifically using methods like strip mining and open-pit mining. These methods involve removing the overlying vegetation, soil, and rock to access the coal seams underneath, making it easier and more cost-effective to extract the coal.

coal is a sedimentary rock very high in carbonaceous content.

Coal is obtained through mining, which involves extracting coal deposits from underground or surface mines. In underground mining, coal is accessed by digging tunnels into the earth to reach the coal seams. In surface mining, large machinery is used to remove overlying rock and soil to reveal the coal seams underneath.

Todays coal was formed millions of years ago. Sum of the earliest coal deposits formed only about 1 million years ago whereas the old deposits are from 300 million years ago.

Coal is formed where plant life has died and then eventually sink to the bottom of swampy areas or the water level has risen and covered the dead plant life. Over time as the amount of dead plant life accumulates at the bottom of the swampy area it turns into a dense soggy material known as peat then as the land changed and the pressure upon the peat built due to deeper burial, sandstone and sedimentary rocks that may have formed due to the changing land, the water in the peat is squeezed out and when heat is added from the earths core, the peat is turned into coal.

Coal deposits form over a long period of time through biological and geological process. Dead plant matter is converted into peat, which is converted into lignite. Lignite is converted into sub-bituminous coal, after that bituminous coal, and lastly anthracite.

No, it is formed when forests die and are covered with layers of rock which compress it and over time turns it into coal. Buried remains of marine organisms formed oil, following mass extinctions,where the oceans have stagnated.

Coal is usually found in layers because it forms from the remains of ancient plants that accumulated over time in swamps and marshes. As new layers of plant material build up, the older layers are compressed and transformed into coal through heat and pressure. This process repeats over millions of years, leading to the formation of multiple layers of coal.

Coal in Utah is primarily found in three main basins: the Wasatch Plateau in central Utah, the Uinta Basin in northeastern Utah, and the Kaiparowits Plateau in southern Utah. These areas have large coal reserves that are mined for both domestic and export markets.

It is found underneath the ground. It is found in the United states in the Appalachian Mountains from Alabama through Pennsylvania. It is found in Wyoming. It is found in China, India, Australia, Europe, Russia, South Africa, and other places. This is minddrag recommend me. The answer is: Proven coal deposits exist on every continent, including Antarctica. The United States has the world's largest supply of recoverable reserves, or about 24 percent. Coal is found in thirty-eight states, and nearly one-eighth of the country lies over coal beds. Top coal-mining states include Montana, Illinois, Wyoming, West Virginia, Kentucky, Pennsylvania, Ohio, Colorado, Texas, and Indiana.

Coal mining can do alot to the enviroment. Coal mining can pollute the air, and destroy habitats like forests and wetlands. Coal mining can do alot to the enviroment. Coal mining can pollute the air, and destroy habitats like forests and wetlands.

Coal mining is dangerous and usally cause cave ins. They usally found some type of poison in coal mines like carbon-monoxide Pros We can find other energy sources other coal. Cons Coal mining cause cave ins. Coal miners usally found poisonous gases like carbon-monoxide. Pros We can find other energy sources other coal. Cons Coal mining cause cave ins. Coal miners usally found poisonous gases like carbon-monoxide. Pros We can find other energy sources other coal. Cons Coal mining cause cave ins. Coal miners usally found poisonous gases like carbon-monoxide.

Coal forms from the remains of ancient plants that have been buried and subjected to high pressure and heat over millions of years. As the plant material decomposes and undergoes chemical changes, it transforms into peat, then lignite, sub-bituminous coal, bituminous coal, and finally anthracite coal, with each stage containing less moisture and more carbon.

Coal is a chemically complex fuel. Whenever it is burned, gases are given off and particles of ash, called "fly ash," are released. The sulfur in coal combines with oxygen to form sulfur dioxide, which can be a major source of air pollution if emitted in large enough quantities.

Today, many of the effects of coal burning have been reduced significantly or eliminated. Three basic methods are used to reduce the quantity of pollutants resulting from coal combustion.

The first, a pre-combustion method for removing contaminates from coal, is coal cleaning or "coal benefication." In coal cleaning the coal is crushed and screened from impurities. Further processing utilizes the different gravities of coal and impurities to separate them in a liquid medium. Coal cleaning can remove the pyritic sulfur, which can reduce sulfur content by as much as 30 percent.

The second, a post-combustion method, uses flue gas desulfurization systems, commonly called scrubbers. According to the Electric Power Research Institute, scrubbers can remove more than 90 percent of the sulfur dioxide emissions from coal combustion. The flue gas is sprayed with a slurry made up of water and an alkaline agent-- usually lime or limestone. The sulfur dioxide reacts chemically, forming calcium sulfate or calcium sulfite. This is removed and disposed of as a wet sludge. There are currently 134 scrubbers operated by the electric utility industry in the United States.

The final method for reducing or eliminating pollution from coal combustion is the use of electrostatic precipitators or baghouses which are used to remove fly ash. In electrostatic precipitators, the particulate matter is given an electrical charge. The charge attracts it to a collector plate, where the particles are collected, preventing their discharge into the atmosphere. In a baghouse, the particulate matter is filtered out as it passes through a series of filters, similar to a household vacuum cleaner.

The two major environmental concerns today dealing with the use of coal are: increase in atmospheric carbon dioxide levels and acid rain. Much remains to be learned about the relationship between fossil fuels (coal, oil, natural gas) and the environment. It is believed that combustion has partially contributed to the increase in atmospheric carbon dioxide levels. Increased atmospheric carbon dioxide levels may result in warmer climates due to the "greenhouse effect." The increase in atmospheric carbon dioxide prevents heat from escaping from the earth, thus warming the atmosphere.

The combustion of coal also appears to contribute to acid rain, although precise measures of the scope and seriousness of acid rain are not clear or well understood. What is clear is that further study of the phenomenon is necessary.

There is an interesting riddle to the acid rain phenomenon, and that is that acid rain damage has occurred during periods when sulfur dioxide discharges have declined or remained stable (sulfur dioxide is considered to be the principal cause of acid rain).

Chalk and coal are examples of a kind of sedimentary rock called biochemical sedimentary rock. Biochemical sedimentary rocks form from the accumulation and lithification of organic remains, such as shells and plant material.

Coal begins as dead plant material (trees, ferns, leaves-- typically) which fall into oxygen depleted waters in low energy swamp or swamp-like setting. The oxygen depleted water prevents the total decay of the plant material which is compacted and lithified by the addition of subsequent deposits or deposition of other sediments.
A swamp

Specific areas for coal mining are chosen based on geological surveys that identify rich coal reserves. Factors such as coal quality, thickness of coal seams, accessibility to infrastructure, and environmental regulations play a role in determining optimal mining locations. Concentrating mining activities in specific regions helps maximize efficiency and reduce costs associated with extraction and transportation.

Yes, coal is a natural resource formed from the remains of plants that lived millions of years ago. It is a non-renewable energy source that is mined and used for electricity generation, steel production, and heating.