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Фотоальбом:
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File:Coal mine in Inner Mongolia 002.jpg
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Coal mining
Coal mining is the process of extracting coal from the ground or from a mine. 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.
Coal mining
coal mining, extraction of coal deposits from the surface of Earth and from underground. Mongolia: coal mine Tavantolgoi coal mine, southern Gobi, Mongolia. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy.
Coal Mining: How Is Coal Mined?
Coal mining (also called colliery) is the process of extracting coal from the ground's surface or from deep underground. Coal miners literally raze entire mountain ranges to feed our insurmountable desire for cheap energy. There's something brutally simple about coal mining.
Coal explained Mining and transportation of coal
Modern mining methods allow U.S. coal miners to easily reach most of the nation's coal reserves and to produce about three times more coal in one hour than in 1978. Surface mining is often used when coal is less than 200 feet underground.
Coal 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 technological, economic, and social factors.
What Is Coal Mining and How Does It Work?
Coal mining is the process of extracting coal from the earth. Coal miners use large machines to remove coal from underground or near the surface. Some coal deposits, known as coal beds or seams, are located close to the earth's surface, making them easily accessible.
History of coal mining
The History of coal mining goes back thousands of years, with early mines documented in ancient China, the Roman Empire and other early historical economies.
Coal mining
Coal mining - Extraction, Processing, Pollution: In geologic terms, coal is a sedimentary rock containing a mixture of constituents, mostly of vegetal origin. Vegetal matter is composed mainly of carbon, hydrogen, oxygen, nitrogen, sulfur, and some inorganic mineral elements.
Coal Mining
Learn about the different types of coal mining, such as surface and underground, and how they work. Find out how coal mining affects the environment and safety, and how it is reclaimed after mining.
Coal mining in the United States
Coal production volume, 2008-2018. In 2018, coal mining decreased to 755 million short tons, and American coal consumption reached its lowest point in nearly 40 years. [17] In 2017, U.S. coal mining had increased to 775 million short tons. [3] In 2016, US coal mining declined to 728.2 million short tons, down 37 percent from the peak production of 1,172 million tons in 2008.