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[[File: | [[File:Dust Suppression Systems_1.jpg|thumb|200px|right|Dust Suppression Systems]] | ||
Dust is generated by wind erosion as well as by moving, crushing, grinding or milling materials to a finer size. It consists of solid particles larger than 1 micron (µm) in mean diameter. Particles less than 10 µm are the most dangerous, as these can enter the respiratory system and causebreathing difficulties. | Dust is generated by wind erosion as well as by moving, crushing, grinding or milling materials to a finer size. It consists of solid particles larger than 1 micron (µm) in mean diameter. Particles less than 10 µm are the most dangerous, as these can enter the respiratory system and causebreathing difficulties. |