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Serious personal injury
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Admission to hospital.
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Inhalable particulates, английский
Air contaminates having a diameter less than 10 microns (millionths of a metre), pm10, that can be inhaled into the upper respiratory tract. they include particulates with a diameter less than 2.5 microns, pm2.5, which are respirable into the lungs.
Stress free temperature, английский
Actual temperature at which there are no temperature induced stresses in the rail.
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