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Severn Tunnel
The Severn Tunnel (Twnnel Hafren) is a railway tunnel under the River Severn between Wales and England, opened in 1886 and Britain's longest until 2007.
Severn Valley Railway
The Severn Valley Railway is a 16-mile heritage railway in England running steam and heritage diesel trains between Kidderminster in Worcestershire and Bridgnorth in Shropshire.
Severny Coal Mine
Severny Coal Mine (razrez Severny) is one of three giant open-pit coal mines at the Ekibastuz basin in Pavlodar Region, Kazakhstan, opened in 1954, producing 10 million tons a year.
Severo-Chaselskoye Gas and Condensate Field
Severo-Chaselskoye, also rendered North-Chaselskoye, is an oil, gas and condensate field in Yamalo-Nenets, West Siberia, discovered in 1987 and started by NOVATEK in 2024 for domestic gas supply.
Severo-Danilovskoye Oil and Gas Field
Severo-Danilovskoye (Северо-Даниловское) is an oil and gas condensate field in the Katangsky district of Irkutsk Region, East Siberia, Russia, discovered by Rosneft in 2011 and operated by its subsidiary Verkhnechonskneftegaz.
Severo-Komsomolskoye Oil and Gas Field
Severo-Komsomolskoye, also called North-Komsomolskoye, is an onshore oil and gas condensate field in the Yamalo-Nenets Autonomous Area of northern West Siberia, Russia, discovered in 1969 and developed by SevKomNeftegaz.
Severo-Labatyuganskoye Oil Field
The Severo-Labatyuganskoye (Северо-Лабатьюганское) oil field lies in the Khanty-Mansi Autonomous Okrug of Western Siberia, 273 km northwest of Surgut; discovered in 2000, it is operated by Surgutneftegas.
Severo-Priobskoye oil field
Severo-Priobskoye (Северо-Приобское), also the North Priobskoye license territory, is the northern part of the giant Priobskoye oil field in Western Siberia, discovered in 1982 and operated by a Rosneft subsidiary.
Severo-Talakanskoye oil field
Severo-Talakanskoye (Северо-Талаканское нефтяное месторождение) is an onshore oil field in the Lensky district of Yakutia, Russia, discovered in 2007 and part of the Talakan group operated by Surgutneftegas since 2011.
Severo-Urengoyskoye field
Severo-Urengoyskoye field (Северо-Уренгойское месторождение) is a gas and gas condensate field in the Yamalo-Nenets Autonomous District of northern West Siberia, Russia, developed by ZAO Nortgas and producing since 2001.
Severo-Zapadnaya power station
Severo-Zapadnaya power station, also known as the North-West CHP, is a 900 MW gas-fired combined heat and power station in Saint Petersburg, Russia, and the first Russian plant built with new-generation combined-cycle technology.
Severočeské doly
Severočeské doly is a Czech brown coal mining company headquartered in Chomutov and wholly owned by ČEZ, the largest Czech lignite producer with two surface mines.
Seversky P-35
The Seversky P-35, also known as the P-35 Guardsman, was a 1930s American fighter that won a 1936 Army competition and served briefly in the Philippines.
Severstal
Severstal is a vertically integrated Russian steel and steel-related mining company whose core asset is the Cherepovets Steel Mill, operating since 1955 and majority-owned by Alexey Mordashov.
Seveso disaster
The Seveso disaster was the 1976 release of dioxin from a chemical plant near Milan, which contaminated 1,800 hectares and gave its name to EU safety law.
Seville Cathedral
Seville Cathedral (Catedral de Sevilla) is the Gothic cathedral of Seville, Spain, built between 1401 and 1519 and considered the largest Gothic building in Europe.
Seville City Hall
Seville City Hall, known in Spanish as the Ayuntamiento de Sevilla or Casa Consistorial, is the seat of the municipal government of Seville, Spain, with a 16th-century plateresque façade.
Seville Metro
The Seville Metro (Metro de Sevilla) is a light-metro network serving Seville and its metropolitan area in Andalusia, Spain, whose single 18-kilometer line opened in 2009.
Sewage
Sewage, also known as municipal or domestic wastewater, is the spent water supply of a community, roughly 99% water, collected by sewerage systems and treated before discharge.
Sewage pump
A sewage pump is a pump that moves raw wastewater containing solids, rags, and grit from lower to higher elevation, typically from a wet well into a pressurized force main.
Sewage sludge
Sewage sludge is the semi-solid residue of municipal and industrial wastewater treatment, containing organic matter, nutrients, and microorganisms; treated sludge applied to land is called biosolids.
Sewage sludge treatment
Sewage sludge treatment, also called sludge treatment, is the set of processes that reduce volume, destroy pathogens, and prepare sewage sludge for land application, landfilling, or incineration.
Sewage treatment
Sewage treatment, also known as wastewater treatment, removes pollutants from wastewater from homes and businesses before release into local waterways, protecting public health and clean water.
Seward Highway
The Seward Highway is a 127-mile highway in south-central Alaska running from Anchorage south to Seward on Resurrection Bay, completed in 1951 and holding the federal All-American Road designation.
Sewer and drainage tunnels
Sewer and drainage tunnels are underground civil-engineering tunnels built to convey, store, or transfer sewage and stormwater, ranging from Bazalgette's London sewers of the 1860s to the Thames Tideway Tunnel.
Sewer system failures and overflows
Sewer system failures and overflows occur when wastewater networks fail to convey sewage to treatment, releasing untreated waste through combined and sanitary sewer overflows, backups, or collapses.
Sewerage
Sewerage, also called a sewage system, is the entire infrastructure that collects, treats, and disposes of wastewater, as distinct from the individual sewers that make it up.
Sex doll
A sex doll, also called a love doll, is a human-like figure for sexual use, typically TPE or silicone over a metal skeleton, and non-interactive unlike a sex robot.
Sex in space
Sex in space, also called space sex, covers whether humans have had sex in orbit, which no astronaut has officially done, and how spaceflight affects reproduction.
Sex machine
A sex machine is a motor-driven device that sustains sexual stimulation beyond manual effort, including saddle-style, thrusting, and handheld types.