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INTRODUCTION TO OCCUPATIONAL HEALTH |
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Dusts |
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Dusts
are solid particles generated by handling, crushing, grinding, rapid impact, detonation,
and decrepitation (breaking apart by heating) of organic or inorganic materials, such as
rock, ore, metal, coal, wood, and grain. Dust is a term used in industry to describe airborne solid particles that range in size from 0.1 to 25 micrometers (µm). One micrometer is a unit of length equal to one millionth of a meter. A micrometer is also referred to as a "micron" and is equal to 1/25,400 of an inch. Dust can enter the air from various sources, such as the handling of dusty materials, or during such processes such as grinding, crushing, blasting, and shaking. |
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