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Coal Mine
Coal mining is the process of resource extraction, extracting coal from the ground or from a mine. Coal is valued for its Energy value of coal, energy content and since the 1880s has been widely used to Electricity generation, 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 is called a "pit", and above-ground mining structures are referred to as a "pit head". In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging, and manually extracting the coal on carts to large Open-pit mining, open-cut and Longwall mining, longwall mines. Mining at this scale requires the use of Dragline excavator, draglines, trucks, conveyors, hydraulic jacks, and shearers. The coal mining industry has a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Mine Wyoming
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian (geology), Pennsylvanian) and Permian times. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its Electricity generation, electricity. Some iron and steel-maki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragline Excavator
A dragline excavator is a heavy-duty excavator used in civil engineering and surface mining. It was invented in 1904, and presented an immediate challenge to the steam shovel and its diesel and electric powered descendant, the power shovel. Much more efficient than even the largest of the latter, it enjoyed a heyday in extreme size for most of the 20th century, first becoming challenged by more efficient rotary excavators in the 1950s, then superseded by them on the upper end from the 1970s on. The largest ever walking dragline was Big Muskie, a Bucyrus-Erie 4250-W put online in 1969 that swung a , 325 ton capacity bucket, had a boom, and weighed 13,500 tons. The largest walking dragline produced as of 2014 was Joy Global’s digital AC drive control P&H 9020XPC, which has a bucket capacity of and boom lengths ranging from ; working weights vary between 7,539 and 8,002 tons. Types Draglines fall into two broad categories: those that are based on standard, lifting crane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overburden
In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body. Overburden is distinct from tailings, the material that remains after economically valuable components have been extracted from the generally finely milled ore. Overburden is removed during surface mining, but is typically not contaminated with toxic components. Overburden may also be used to restore an exhausted mining site during reclamation. Interburden is material that lies between two areas of economic interest, such as the material separating coal seams within strata.Peng, Syd S. (1986) ''Coal Mine Ground Control'' (2nd edition), Wiley, New York, page 303, Analogous uses Overburden is also used for all soil and ancillary material above the bedrock horizon in a given area. By analogy, overburden is also used to describe the soil and other material that lies a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Preparation Plant
file:Coal Washer.JPG, 300px, A coal "washer" in Eastern Kentucky file:FAB's BlaschakCoalCompany IMG 4442 BLASCHAK 'Modern Breaker Coal Processing Plant'.JPG, A modern coal breaker in Mahanoy City, Pennsylvania combines washing, crushing, grading, sorting, stockpiling, and shipping in one facility built into a stockpile of anthracite coal below a mountain top strip mine A coal preparation plant (CPP; known as a coal handling and preparation plant (CHPP), coal handling plant, prep plant, tipple or wash plant) is a facility that washes coal of soil and Rock (geology), rock, crusher, crushes it into graded sized chunks (sorting), stockpiles grades preparing it for transport to market, and more often than not, also loads coal into rail cars, barges, or ships. The more of this waste material that can be removed from coal, the lower its total fly ash, ash content, the greater its market Value (economics), value and the lower its transportation costs. Run-of-mine (ROM) coal The coal d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boats Hauling Coal
A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size or capacity, its shape, or its ability to carry boats. Small boats are typically used on inland waterways such as rivers and lakes, or in protected coastal areas. However, some boats (such as whaleboats) were intended for offshore use. In modern naval terms, a boat is a vessel small enough to be carried aboard a ship. Boats vary in proportion and construction methods with their intended purpose, available materials, or local traditions. Canoes have been used since prehistoric times and remain in use throughout the world for transportation, fishing, and sport. Fishing boats vary widely in style partly to match local conditions. Pleasure craft used in recreational boating include ski boats, pontoon boats, and sailboats. House boats may be used for vacationing or long-term residence. Lighters are used to move cargo to and from large ships unable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal In India
Coal in India has been mined since 1774, and India is the second largest producer and consumer of coal after Coal in China, China, mining in FY 2024-25. Around 15% of coal is imported. Due to demand, supply mismatch and poor quality with high ash content, India imports Metallurgical coal, coking coal to meet the shortage of domestic supply. State-owned Coal India had a monopoly on coal mining between its nationalisation in 1973 and 2018. Most of the coal is burned Electricity sector in India, to generate electricity and most electricity is generated by coal, but coal-fired power plants have been criticised for breaking environmental laws. The health and environmental impact of the coal industry is serious, and Coal phase-out, phasing out coal would have short-term health and environmental benefits greatly exceeding the costs. Electricity from new Solar power in India#Major photovoltaic power stations, solar farms in India is cheaper than that generated by List of power stations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal In China
The People's Republic of China is the largest producer and consumer of coal and coal power in China, coal power in the world. China produces approximately 4.8 billion tons of coal per year, over half of the global total. In 2024, coal accounted for approximately 59% of China’s electricity generation, with wind, solar, hydro, and nuclear contributing most of the remainder. Specifically, wind and solar generated 10% and 9% of total electricity respectively, followed by hydropower (13%) and nuclear power (4%). In 2024, China began construction on approximately 94.5 gigawatts (GW) of new coal-fired power capacity, marking the highest annual addition since 2015. Analysts generally frame new coal plants as backup capacity intended to stabilize the grid and ensure supply reliability as intermittent renewables like wind and solar become more dominant. However, a contrasting view highlights that coal mining companies are playing a dominant role in financing these new coal power p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Industry
The energy industry refers to all of the industries involved in the production and sale of energy, including fuel extraction, manufacturing, oil refinery, refining and distribution. Modern society consumes large amounts of fuel, and the energy industry is a crucial part of the infrastructure and maintenance of society in almost all countries. In particular, the energy industry comprises: * the Fossil fuel industry, fossil fuel industries, which include petroleum industry, petroleum industries (oil companies, Oil refinery, petroleum refiners, fuel transport and end-user sales at gas stations), Coal industry, coal industries (extraction and processing), and the natural gas industries (natural gas extraction, and coal gas manufacture, as well as distribution and sales); * the electrical power industry, including electricity generation, electric power distribution, and sales; * the nuclear power industry; * the renewable energy industry, comprising alternative energy and sustainable e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Fuel Phase-out
Fossil fuel phase-out is the proposed gradual global reduction of the use and production of fossil fuels to zero, to reduce air pollution, limit climate change, and strengthen energy independence. It is part of the ongoing renewable energy transition. Many countries are shutting down coal-fired power stations, and fossil-fuelled electricity generation is thought to have peaked. But electricity generation is not moving off coal fast enough to meet climate goals. Many countries have set dates to stop selling petrol and diesel cars and trucks, but a timetable to stop burning fossil gas has not yet been agreed. Current efforts in fossil fuel phase-out involve replacing fossil fuels with sustainable energy sources in sectors such as transport and heating. Alternatives to fossil fuels include electrification, green hydrogen and biofuel. Phase-out policies include both demand-side and supply-side measures. Whereas demand-side approaches seek to reduce fossil-fuel consumption, su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Change
Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in a broader sense also includes previous long-term changes to Earth's climate. The current rise in global temperatures is Scientific consensus on climate change, driven by human activities, especially fossil fuel burning since the Industrial Revolution. Fossil fuel use, Deforestation and climate change, deforestation, and some Greenhouse gas emissions from agriculture, agricultural and Environmental impact of concrete, industrial practices release greenhouse gases. These gases greenhouse effect, absorb some of the heat that the Earth Thermal radiation, radiates after it warms from sunlight, warming the lower atmosphere. Carbon dioxide, the primary gas driving global warming, Carbon dioxide in Earth's atmosphere, has increased in concentratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Pollution
Air pollution is the presence of substances in the Atmosphere of Earth, air that are harmful to humans, other living beings or the environment. Pollutants can be Gas, gases like Ground-level ozone, ozone or nitrogen oxides or small particles like soot and dust. It affects both outdoor air and indoor air. Natural sources of air pollution include Wildfire, wildfires, Dust storm, dust storms, and Volcanic eruption, volcanic eruptions. Indoor air pollution is often Energy poverty and cooking, caused by the use of biomass (e.g. wood) for cooking and heating. Outdoor air pollution comes from some industrial processes, the burning of Fossil fuel, fossil fuels for electricity and transport, waste management and agriculture. Many of the contributors of local air pollution, especially the burning of fossil fuels, also cause greenhouse gas emissions that cause climate change, global warming. Air pollution causes around 7 or 8 million deaths each year. It is a significant risk factor for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Health And Environmental Impact Of The Coal Industry
The health and environmental impact of the coal industry includes issues such as land use, waste management, water and air pollution, caused by the coal mining, processing and the use of its products. In addition to atmospheric pollution, coal burning produces hundreds of millions of tons of solid waste products annually, including fly ash, bottom ash, and flue-gas desulfurization sludge, that contain mercury, uranium, thorium, arsenic, and other heavy metals. Coal is the largest contributor to the human-made increase of carbon dioxide in Earth's atmosphere. There are severe health effects caused by burning coal. Worldwide 25 people die early for each terawatt hour of electricity generated by coal, around a thousand times more than nuclear or solar. In addition, there have been many coal mining disasters, although work related coal deaths has declined substantially as safety measures have been enacted and underground mining has given up market share to surface mining ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
