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Septic drain fields, also called leach fields or leach drains, are subsurface wastewater disposal facilities used to remove contaminants and impurities from the liquid that emerges after anaerobic digestion in a septic tank.
Preliminary treatment: Horizontal flow grit chambers at a sewage treatment plant in Juiz de Fora, Minas Gerais, Brazil. Grit consists of sand, gravel, rocks, and other heavy materials. Preliminary treatment may include a sand or grit removal channel or chamber, where the velocity of the incoming sewage is reduced to allow the settlement of grit.
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In a 2012 survey performed in New York State, all surveyed double-lined landfill cells had leakage rates of less than 500 liters per hectare per day. Average leakage rates were much lower than for landfills built according to older standards before 1992. [4]
New Los Angeles District Attorney Nathan Hochman's office is pushing back against a "meritless" claim of a potential conflict of interest in the Menendez brothers’ case amid reports that their ...
The company started as iron founders in 1794 and expanded in Victorian times to include coal and iron mining. They diversified into equipment manufacture and in 1947 the company started producing the American brands of Koehring excavators under the Newton Chambers Koehring name, [2] and in 1958 they took over Ransomes & Rapier building excavators, drag-lines, port cranes and other construction ...
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A mine rescue chamber is an emergency shelter installed in hazardous environments, typically underground. It is also known as refuge chamber, [ 1 ] refuge bay, or refuge alternative. Refuge chambers come in multiple types and models, and are used in multiple industries including metalliferous mining, coal, tunnelling and petrochemical facilities.