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  2. Non-wage labour costs - Wikipedia

    en.wikipedia.org/wiki/Non-wage_labour_costs

    Non-wage labour costs are social security and insurance contributions, labour taxes and other costs related to employing someone and may include: . statutory and contractual (non-statutory) contributions covering social insurance, including retirement, healthcare, unemployment, child allowance, maternity, disability and other contingencies;

  3. Selective non-catalytic reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_non-catalytic...

    Selective non-catalytic reduction (SNCR) is a method to lessen nitrogen oxide emissions in conventional power plants that burn biomass, waste and coal.The process involves injecting either ammonia or urea into the firebox of the boiler at a location where the flue gas is between 1,400 and 2,000 °F (760 and 1,090 °C) to react with the nitrogen oxides formed in the combustion process.