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Coal Creek Station
Coal Creek Station is a lignite-fired power plant near Underwood, North Dakota, the largest coal-fired plant in the state, sending power to Minnesota by HVDC line.
Coal gas
Coal gas, also known as town gas, is a flammable gas made by heating coal without air, used for lighting and heating from the early 1800s.
Coal gasification
Coal gasification is an industrial process that converts coal into synthesis gas, a mixture of carbon monoxide and hydrogen, using steam and limited oxygen at high temperature.
Coal India
Coal India Limited is an Indian state-owned coal mining holding company formed in 1975 and headquartered in Kolkata, the world's largest coal producer with roughly three quarters of India's output.
Coal liquefaction
Coal liquefaction is a chemical process converting solid coal into liquid hydrocarbons, from synthetic crude to diesel and naphtha, by direct hydrogenation or Fischer–Tropsch synthesis.
Coal mining
Coal mining, also called coal extraction, is the removal of coal from the ground for fuel and steel making; world production reached a record 9.1 billion tonnes in 2024.
Coal mining in Australia
Coal mining in Australia is the extraction of black and brown coal, chiefly in Queensland and New South Wales. Australia is the world's second largest coal exporter.
Coal mining in China
Coal mining in China is the extraction of coal, mainly bituminous, by the world's largest producer, which mined about 4.85 billion tonnes in 2025, led by Shanxi province.
Coal mining in Germany
Coal mining in Germany spans hard coal from the Ruhr and Saar, which ended in 2018, and lignite mining that continues under a phase-out to 2038.
Coal mining in India
Coal mining in India is the extraction of coal, the country's primary energy source, begun commercially in 1774, nationalized in the 1970s, and reopened to private operators in 2020.
Coal mining in Indonesia
Coal mining in Indonesia is mostly open-pit extraction of low- and medium-rank thermal coal in Kalimantan and Sumatra, making it the world's largest steam coal exporter.
Coal mining in South Africa
Coal mining in South Africa is concentrated in Mpumalanga's Witbank and Highveld coalfields; the country was the world's seventh-largest coal producer in 2023, exporting most coal through Richards Bay.
Coal mining in the United Kingdom
Coal mining in the United Kingdom, once the country's staple industry, peaked at 292 million tonnes in 1913 and has declined to 425 thousand tonnes in 2024.
Coal mining in the United States
Coal mining in the United States extracts coal across the Appalachian, Interior, and Western regions, led by Wyoming; production peaked in 2008 and has declined as power generation shifted to natural gas and renewables.
Coal phase-out
A coal phase-out is a policy of ending coal use, most often coal-fired power generation, through plant closures, replacement generation, and support for workers and coal regions.
Coal Wars
The Coal Wars were a series of violent labor conflicts in the American coalfields from the 1890s through the early 1930s, fought by unionizing miners against mine operators.
Coal-water slurry fuel
Coal-water slurry fuel (CWS) is a liquid fuel of finely pulverized coal suspended in water, about 70% coal by weight, pumped and burned like heavy fuel oil.
Coalbed methane
Coalbed methane (CBM) is an unconventional natural gas, mainly methane, generated within and adsorbed on coal seams; wells drain water to lower pressure so the gas desorbs and flows.
Coalesce (company)
Coalesce (Coalesce.io) is a San Francisco data transformation, cataloging, and quality company founded in 2020 by Armon Petrossian and Satish Jayanthi; it raised $81M total and acquired CastorDoc and SYNQ.
Coarse wavelength-division multiplexing
Coarse wavelength-division multiplexing (CWDM) is an optical fiber transmission technology that combines several signals on one fiber with wavelengths spaced 20 nm apart, letting transmitters omit temperature control and cutting cost.
Coarse-Grained Reconfigurable Architecture
A coarse-grained reconfigurable architecture (CGRA) is a hardware platform of processing elements reconfigurable at run time, balancing the efficiency of dedicated chips with software flexibility.
Coarse-groove geometry of 78 rpm records
Coarse-groove geometry describes the wide V-shaped playback groove of shellac 78 rpm records, roughly 120 µm wide, needing stylus sizes of 2.5 to 3.5 mil.
Coast radio station
A coast radio station was a shore-based wireless telegraphy station exchanging Morse-code messages with ships at sea, handling traffic, weather, time signals, and distress watchkeeping.
Coast Starlight
The Coast Starlight is a long-distance Amtrak passenger train running between Los Angeles and Seattle along the Pacific coast since 1971, offering sleeping cars and business class.
Coastal and national submarine telegraph cable networks
Coastal and national submarine telegraph cables were short underwater telegraph links connecting islands and crossing straits, ranging from 1.9 km in Japan to 280 miles to Shetland.
Coastal Engineering Manual
The Coastal Engineering Manual (CEM) is the United States Army Corps of Engineers' comprehensive manual for coastal engineering, first issued in 2002 as EM 1110-2-1100.
Coastal GasLink Pipeline
Coastal GasLink is a 670-kilometer natural gas pipeline in British Columbia, Canada, operated by TC Energy from Dawson Creek to Kitimat, known for Wet'suwet'en opposition and costs rising to about $14.5 billion.
Coastal management
Coastal management, also called coastal defense or coastal protection, directs human activity along coastlines using seawalls, mangrove restoration, and zoning to balance protection, development, and climate hazards.
Coastal Pacific (train)
The Coastal Pacific is a seasonal scenic train in New Zealand's South Island, running 348 km from Christchurch to Picton via Kaikōura and Blenheim, timed to connect with the Cook Strait ferry.
Coastal radio station VIN Geraldton
Coastal radio station VIN Geraldton was an Australian coastal wireless telegraphy station at Geraldton, Western Australia, opened in 1913 as the Commonwealth's first wireless station in the state.