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  2. Coal combustion products - Wikipedia

    en.wikipedia.org/wiki/Coal_combustion_products

    Photomicrograph made with a scanning electron microscope and back-scatter detector: cross section of fly ash particles. Fly ash, flue ash, coal ash, or pulverised fuel ash (in the UK)—plurale tantum: coal combustion residuals (CCRs)—is a coal combustion product that is composed of the particulates that are driven out of coal-fired boilers together with the flue gases.

  3. Health effects of coal ash - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_coal_ash

    Coal ash contains many toxic substances that may affect human health, if people are exposed to them above a certain concentration in the form of particulate matter.So it is necessary to avoid situations in which employees working in coal-fired power plants or public members living close to coal ash landfills will be exposed to high coal ash dust concentrations. [4]

  4. Food safety in the United States - Wikipedia

    en.wikipedia.org/wiki/Food_safety_in_the_United...

    The current food safety laws are enforced by the FDA and FSIS. The FDA regulates all food manufactured in the United States, with the exception of the meat, poultry, and egg products that are regulated by FSIS. [16] The following is a list of all food safety acts, amendments, and laws put into place in the United States. [23] [15]

  5. Ash pond - Wikipedia

    en.wikipedia.org/wiki/Ash_pond

    The wet method consists of constructing a large "pond" and filling it with fly ash slurry, allowing the water to drain and evaporate from the fly ash over time. [10] The flow of water through the fly ash and into ground water is controlled by using low-permeability clay layers and cutoff trenches/walls.

  6. Bottom ash - Wikipedia

    en.wikipedia.org/wiki/Bottom_ash

    A coal-fired power plant with ash ponds. Bottom ash is part of the non-combustible residue of combustion in a power plant, boiler, furnace, or incinerator.In an industrial context, it has traditionally referred to coal combustion and comprises traces of combustibles embedded in forming clinkers and sticking to hot side walls of a coal-burning furnace during its operation.

  7. The Food Defect Action Levels - Wikipedia

    en.wikipedia.org/wiki/The_Food_Defect_Action_Levels

    The Food Defect Action Levels: Levels of Natural or Unavoidable Defects in Foods That Present No Health Hazards for Humans is a publication of the United States Food and Drug Administration's Center for Food Safety and Applied Nutrition [1] detailing acceptable levels of food contamination from sources such as maggots, thrips, insect fragments, "foreign matter", mold, rodent hairs, and insect ...

  8. Food safety - Wikipedia

    en.wikipedia.org/wiki/Food_safety

    Food safety (or food hygiene) is used as a scientific method/discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness.The occurrence of two or more cases of a similar illness resulting from the ingestion of a common food is known as a food-borne disease outbreak. [1]

  9. Soil contamination - Wikipedia

    en.wikipedia.org/wiki/Soil_contamination

    Ingesting food or vegetables grown in contaminated soil or with foods in contact with contaminants; Skin contact with dust or soil; Vapors from the soil; Inhaling clouds of dust while working in soils or windy environments; However, some studies estimate that 90% of exposure is through eating contaminated food. [16]